Penerbitan SCOPUS/ERA

a.a. lahimer, k. sopian, a.a. razak, m.h. ruslan. a. alghoul.  (2019).  experimental investigation on the performance of solar chimney for reduction of vehicle cabin soak temperature.  - applied thermal engineering.  247-260. 

a.a. razak, z.a.a. majid, f. basrawi, a.f. sharol, m.h. ruslan, k. sopian.  (2019).  a performance and technoeconomic study of different geometrical designs of compact single-pass cross-matrix solar air collector with square-tube absorbers.  - solar energy.  314-330. 

nur farhana mohd razali, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2019).  electrical characteristic of photovoltaic thermal collector with water-multiwalled carbon nanotube nanofluid flow.  - indonesian journal of electrical engineering and computer science. 

nur farhana mohd razali, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2019).  review of water-nanofluid based photovoltaic/thermal (pv/t) systems.  - international journal of electrical and computer engineering (ijece). 

nur farhana mohd razali, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2019).  experiment study of water based photovoltaic-thermal (pv/t) collector.  - international journal of electrical and computer engineering (ijece).  118-125. 

ahmad fudholi, nur farhana mohd razali, mohammad h.yazdi, adnan ibrahim, mohd hafidz ruslan, mohd yusof othman, kamaruzzaman sopian.  (2019).  tio2/water-based photovoltaic thermal (pvt) collector: novel theoretical approach.  - energy.  305-314. 

nurul syakirah nazri, ahmad fudholi, wan mustafa, chan hoy yen, masita mohammad, mohd hafidz ruslan, kamaruzzaman sopian.  (2019).  exergy and improvement potential of hybrid photovoltaic thermal/thermoelectric (pvt/te) air collector.  - renewable and sustainable energy reviews.  132-144. 

arina mohd noh, sohif mat and mohd hafidz ruslan.  (2018).  cfd simulation of temperature and air flow distribution inside industrial scale solar dryer.  - journal of advanced research in fluid mechanics and thermal sciences. 

nurul syakirah nazri, ahmad fudholi, bardia bakhtyar, can hoy yen, adnan ibrahim, mohd hafidz ruslan, sohif mat, kamaruzzaman sopian.  (2018).  energy economic analysis of photovoltaic-thermal-thermoelectric (pvt-te) air collectors.  - renewable and sustainable energy reviews. 

b. elhub, sohif mat, k. sopian, a.m. elbreki, mohd hafidz ruslan, a.a. ammar.  (2018).  performance evaluation and parametric studies on variable nozzle ejector using r134a.  - case studies in thermal engineering. 

nurul syakirah nazri, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2018).  mathematical modeling of photovoltaic thermalthermoelectric (pvt-te) air collector.  - international journal of power electronics and drive system (ijpeds). 

towhid hossain chowdhury, mohammad tanvirul ferdaous, mohd. aizat abdul wadi, puvaneswaran chelvanathan, nowshad amin, ashraful islam, nurhafiza kamaruddin, muhammad irsyamuddin m. zin, mohd hafidz ruslan, kamaruzzaman bin sopian and md. akhtaruzzaman.  (2018).  prospects of ternary cd1xznxs as an electron transport layer and associated interface defects in a planar lead halide perovskite solar cell via numerical simulation.  - journal of electronic materials.  3051-3058. 

idris zulkifle, ali h.a. alwaeli, mohd hafidz ruslan, zahari ibarahim, mohd yusof hj othman, kamaruzzaman sopian.  (2018).  numerical investigation of v-groove air-collector performance with changing cover in bangi, malaysia.  - case studies in thermal engineering. 

ali h.a. al-waelia, k. sopian, hussein a. kazem, jabar h. yousif, miqdam t. chaichan, adnan ibrahim, sohif mat, mohd hafidz ruslan.  (2018).  comparison of prediction methods of pv/t nanofluid and nano-pcm system using a measured dataset and artificial neural network.  - solar energy.  378-396. 

suhaimi misha, sohif mat, mohd hafidz ruslan, elias salleh, kamaruzzaman sopian.  (2018).  a study of drying uniformity in a new design of tray dryer.  - journal of advanced research in fluid mechanics and thermal sciences. 

nurul syakirah nazri, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2018).  experimental study of photovoltaic thermal-thermoelectric (pvt-te) air collector.  - international journal of power electronics and drive system (ijpeds). 

muslizainun mustapha, ahmad fudholi, chan hoy yen, mohd hafidz ruslan, kamaruzzaman sopian.  (2018).  review on energy and exergy analysis of air and water based photovoltaic thermal (pvt) collector.  - international journal of power electronics and drive system (ijpeds). 

cheku nurul aisyah, ahmad fudholi, mohd yusof othman, adnan ibrahim, mohd hafidz ruslan, kamaruzzaman sopian.  (2018).  kecekapan pengumpul pv/t menggunakan pengumpul terma reka bentuk pilin (efficiency of pv/t collector using spiral thermal absorber design).  - sains malaysiana. 

ahmad fudholi, muhammad zohri, goh li jin, adnan ibrahim, chan hoy yen, mohd yusof othman, mohd hafidz ruslan & kamaruzzaman sopian.  (2018).  energy and exergy analyses of photovoltaic thermal collector with v-groove.  - solar energy.  742-750. 

idris zulkifle , mohd hafidz ruslan, mohd. yusof hj othman, zahari ibarahim , kamaruzzaman sopian.  (2018).  the v-groove solar collector performance using fresnel lens and glass glazing.  - journal of engineering and applied sciences. 

idris zulkifle, mohd hafidz hj ruslan, mohd. yusof hj othman, zahari ibarahim, kamaruzzaman sopian.  (2018).  pengeringan asam gelugur (garcinia atroviridis) menggunakan sistem pengering suria.  - jurnal teknologi (sciences & engineering). 

muhammad zohri, ahmad fudholi, mohd hafidz ruslan, kamaruzzaman sopian.  (2017).  performance analysis of photovoltaic thermal (pvt) with and without v-groove collector.  - journal of engineering and applied sciences.  6029-6032. 

ali, m. k. m., sulaiman, j., yasir, s. m., ruslan, m. h., fudholi, a., muthuvalu, m. s., and ramu, v..  (2017).  cubic spline as a powerful tools for processing experimental drying rate data of seaweed using solar drier.  - malaysian journal of mathematical sciences.  159-172. 

m.w. kareem, khairul habib, k. sopian, m.h. ruslan.  (2017).  multi-pass solar air heating collector system for drying of screw-pine leaf (pandanus tectorius).  - renewable energy.  413-424. 

ahed hameed jaaz, husam abdulrasool hasan, kamaruzzaman sopian, mohd hafidz bin haji ruslan, saleem hussain zaidi.  (2017).  design and development of compound parabolic concentrating for photovoltaic solar collector: review.  - renewable and sustainable energy reviews.  1108-1121. 

ali h.a. al-waeli, k. sopian, miqdam t. chaichan, hussein a. kazem, adnan ibrahim, sohif mat, mohd hafidz ruslan.  (2017).  evaluation of the nanofluid and nano-pcm based photovoltaic thermal (pvt) system: an experimental study.  - energy conversion and management.  693-708. 

ali najah al-shamani , k. sopian , sohif mat , husam abdulrasool hasan , azher m. abed, m.h. ruslan.  (2016).  experimental studies of rectangular tube absorber photovoltaic thermal collector with various types of nanofluids under the tropical climate conditions.  - energy conversion and management.  528-542. 

towhid h. chowdhury, ashraful islam, a. k. mahmud hasan, m. asri mat terdi, m. arunakumari, surya prakash singh, md. khorshed alam, idriss m. bedja, mohd hafidz ruslan, kamaruzzaman sopian, nowshad am.  (2016).  prospects of graphene as a potential carrier-transport material in third-generation solar cells.  - the chemical record.  614-632. 

s. misha, s. mat, m.h. ruslan, e. salleh , k. sopian.  (2016).  performance of a solar assisted solid desiccant dryer for oil palm fronds drying.  - solar energy.  415-429. 

ahmad fudholi, b. bakhtyar, habibis saleh, mohd hafidz ruslan, mohd yusof othman & kamaruzzaman sopian.  (2016).  drying of salted silver jewfish in a hybrid solar drying system and under open sun: modeling and performance analyses.  - international journal of green energy.  1135-1144. 

ahmad fudholi, rado yendra, dayang fredalina basri, mohd hafidz ruslan, kamaruzzaman sopian.  (2016).  energy and exergy analysis of hybrid solar drying system.  - contemporary engineering sciences.  215 - 223. 

m.y. othman, s.a. hamid, m.a.s. tabook, k. sopian, m.h. ruslan & z. ibarahim.  (2016).  performance analysis of pv/t combi with water and air heating system: an experimental study.  - renewable energy.  716-722. 

ahmad fudholi, sohif mat, dayang fredalina basri, mohd hafidz ruslan, kamaruzzaman sopian.  (2016).  performances analysis of greenhouse solar dryer with heat exchanger.  - contemporary engineering sciences.  135 - 144. 

a.a.razak, z.a.a.majid, w.h.azmi, m.h.ruslan, sh.choobchian, g.najafi, k. sopian.  (2016).  review on matrix thermal absorber designs for solar air collector.  - renewable and sustainable energy reviews.  682-693. 

a.m.elbreki,m.a.alghoul,a.n.al-shamani,a.a.ammar,bita yegani, alsanossi m.aboghrara,m.h.rusaln,k.sopian.  (2016).  the role of climatic design operational parameters on combined pv/t collector performance a critical review.  - renewable and sustainable energy reviews.  602-647. 

f. hussain, myh othman, b yatim, h ruslan, k sopian, z. anuar & s. khairuddin.  (2015).  an improved design of photovoltaic/thermal solar collector.  - solar energy.  885-891. 

ahmad fudholi, kamaruzzaman sopian, b. bakhtyar, mohamed gabbasa, mohd yusof othman, mohd hafidz ruslan.  (2015).  review of solar drying systems with air based solar collectors in malaysia.  - renewable and sustainable energy reviews.  1191-1204. 

majid z.a.a., razak a.a., ruslan m.h., sopian k..  (2015).  characteristics of solar thermal absorber materials for cross absorber design in solar air collector.  - international journal of automotive and mechanical engineering.  2582-2590. 

s. a. shahahmadi, b. yeganeh, n. huda, n. asim, m. hafidz, m. m. alam, z. a. alothman, k. sopian, and n. amin.  (2015).  properties of a-sige thin films on glass by co- sputtering for photovoltaic absorber application.  - journal of nanoscience and nanotechnology.  9275-9280. 

m. a. islam, k. s. rahman, f. haque, n.a. khan, m. akhtaruzzaman, m. m. alam, h. ruslan, k. sopian, n. amin.  (2015).  effect of sn doping on the properties of nano-structured zno thin films deposited by co-sputtering technique.  - journal of nanoscience and nanotechnology.  9184-9191. 

ali najah al shamani, sohif mat, m. h. ruslan, azher m. abed, k. sopian..  (2015).  numerical study on the characteristics of a specially designed rectangular tube absorber photovoltaic thermal collector (pvt).  - wseas transactions on environment and development.  23-28. 

amir abdul razak, zafri azran abdul majid, mohd hafidz ruslan, kamaruzzaman sopian.  (2015).  thermal performance analysis of staging effect of solarthermal absorber with cross design.  - malaysian journal of analytical sciences.  1264-1273. 

willy tjiu, tjukup marnoto, sohif mat, mohd hafidz ruslan, kamaruzzaman sopian.  (2015).  darrieus vertical axis wind turbine for power generation i: assessment of darrieus vawt configurations.  - renewable energy.  50-67. 

willy tjiu,tjukup marnoto, sohif mat,mohd hafidz ruslan,kamaruzzaman sopian.  (2015).  darrieus vertical axis wind turbine for power generation ii: challenges in hawt and the opportunity of multi-megawatt darrieus vawt development.  - renewable energy.  560-571. 

s. misha, s. mat, m.h. ruslan, e. salleh, k. sopian.  (2015).  performance of a solar assisted solid desiccant dryer for kenaf core fiber drying under low solar radiation.  - solar energy.  194-204. 

roonak daghigh, mohd hafidz ruslan,kamaruzzaman sopian.  (2015).  parametric studies of an active solar water heating system with various types of pvt collectors.  - sadhana-academy proceedings in engineering sciences.  2177-2196. 

al-shamani a.n., sopian k., mohammed h.a., mat s., ruslan m.h., abed a.m..  (2015).  enhancement heat transfer characteristics in the channel with trapezoidal rib-groove using nanofluids.  - case studies in thermal engineering.  48-58. 

azher m.abed, k.sopian, h.a.mohammed, m.a.alghoul, mohd hafidz ruslan, sohif mat, ali najah al-shamani.  (2015).  enhance heat transfer in the channel with v-shaped wavy lower plate using liquid nanofluids.  - case studies in thermal engineering.  13-23. 

mohd syahriman mohd azmi, mohd. yusof hj. othman, mohd hafidz hj. ruslan, kamaruzzaman sopian, zafri azran abdul majid and ahmad fudholi.  (2015).  research and development work on solar assisted drying systems..  - research journal of applied sciences, engineering and technology.  701-714. 

ahmad fudholi,kamaruzzaman sopian, mohamed gabbasa, b.bakhtyar, m. yahya, mohd hafidz ruslan, sohif mat.  (2015).  techno-economic of solar drying systems with water based solar collectors in malaysia: a review.  - renewable and sustainable energy reviews.  809-820. 

dayang fredalina basri, nur faizah abu bakar, ahmad fudholi, mohd hafidz ruslan and im saroeun.  (2015).  comparison of selected metals content in cambodian striped snakehead fish (channa striata) using solar drying system and open sun drying.  - journal of environmental and public health.  1-6. 

m.k. anuar sharif, a.a. al-abidi, s. mat, k. sopian, m.h. ruslan, m.y. sulaiman & m.a.m. rosli.  (2015).  review of the application of phase change material for heating and domestic hot water systems.  - renewable and sustainable energy reviews.  557-568. 

ahmad fudholi, kamaruzzaman sopian, m a alghoul, mohd hafidz ruslan & mohd yusof othman.  (2015).  performances and improvement potential of solar drying system for palm oil fronds.  - renewable energy.  561-565. 

m. m. s. dezfouli, s. mat, g. pirasteh, k. s. m. sahari, k. sopian, and m. h. ruslan.  (2014).  simulation analysis of the four configurations of solar desiccant cooling system using evaporative cooling in tropical weather in malaysia.  - international journal of photoenergy.  2014:Article ID 843617. 

ali najah al-shamani, mohammad h.yazdi, m.a.alghoul,azher m.abed, m.h. ruslan, sohif mat, k.sopian.  (2014).  nanofluids for improved efficiency in cooling solar collectors - a review.  - renewable and sustainable energy reviews.  38:348-367. 

ahmad fudholi, kamaruzzaman sopian, mohammad h. yazdi, mohd hafidz ruslan, adnan ibrahim, hussein a. kazem.  (2014).  performance analysis of photovoltaic thermal (pvt) water collectors.  - energy conversion and management.  78:641-651. 

adnan ibrahim, ahmad fudholi, kamaruzzaman sopian, mohd yusof othman, mohd hafidz ruslan.  (2014).  efficiencies and improvement potential of building integrated photovoltaic thermal (bipvt) system.  - energy conversion and management.  527-534. 

ahmad fudholi, kamaruzzaman sopian, mohd yusof othman, mohd hafidz ruslan.  (2014).  energy and exergy analyses of solar drying system of red seaweed.  - energy and buildings.  68:121-129. 

ahmad fudholi, kamaruzzaman sopian, mohammad h. yazdi, mohd hafidz ruslan, mohamed gabbasa, hussein a. kazem.  (2014).  performance analysis of solar drying system for red chili.  - solar energy.  99:47-54. 

el-ladan a.h., ruslan m.h., chan h.y., sopian k., zaidi s.h..  (2014).  comparative evaluation of reflective and refractive optical concentration systems in tropical climate.  - research journal of applied sciences, engineering and technology.  1319 - 1325. 

z. a. a. majid, m. h. ruslan, k. sopian, m. y. othman and m. s. m. azmi.  (2014).  study on performance of 80 watt floating photovoltaic panel.  - journal of mechanical engineering and sciences.  1150-1156. 

s. misha,s. mat, m.h. ruslan,k. sopian and e. salleh.  (2014).  comparison between 2d and 3d simulations of a tray dryer system using cfd software.  - world applied sciences journal.  29 (10): 1301-1309. 

z. a. a. majid, m. h. ruslan, k. sopian, m. y. othman, and m. s. m. azmi.  (2014).  study on performance of 80 watt floating photovoltaic panel.  - journal of mechanical engineering and sciences.  1150-1156. 

ali najah al-shamani, k. sopian, h.a. mohammed, sohif mat, mohd hafidz ruslan, azher m. abed.  (2014).  enhancement heat transfer characteristics in the channel with trapezoidal rib-groove using nanofluids.  - case studies in thermal engineering.  48-58. 

ahmad fudholi, mohd yusof othman, mohd hafidz ruslan, and kamaruzzaman sopian.  (2013).  drying of malaysian capsicum annuum l. (red chili) dried by open and solar drying.  - international journal of photoenergy.  Article no.167895. 

rada zarasvand asadi, fatihah suja, mohd hafidz ruslan, nuruláin abd jalil.  (2013).  the application of a solar still in domestic and industrial wastewater treatment..  - solar energy.  93:63-71. 

ahmad fudholi, kamaruzzaman sopian, mohd yusof othman, mohd hafidz ruslan, b. bakhtyar.  (2013).  energy analysis and improvement potential of finned double-pass solar collector.  - energy conversion and management.  75:234-240. 

mohd yusof othman, adnan ibrahim, goh li jin, mohd hafidz ruslan, kamaruzzaman sopian.  (2013).  photovoltaic-thermal (pv/t) technology - the future energy technology.  - renewable energy.  171-174. 

s.m.c. fairuz m.y. sulaiman c.h. lim s. mat b. ali o. saadatian m.h. ruslan e. salleh k. sopian.  (2013).  long term strategy for electricity generation in peninsular malaysia - analysis of cost and carbon footprint using message.  - energy policy.  62:493-502. 

yousef a. eltbaakh, m.h. ruslan, m.a. alghoul, m.y. othman, k. sopian.  (2013).  measurements of spectral-band solar irradiance in bangi, malaysia.  - solar energy.  89:62-80. 

f. hussain, m.y.h. othman, k. sopian, b. yatim, h. ruslan, h. othman.  (2013).  design development and performance evaluation of photovoltaic/thermal(pv/t) air base solar collector.  - renewable and sustainable energy reviews.  25:431-441. 

ahmad fudholi, kamaruzzaman sopian, mohd hafidz ruslan, mohd yusof othman.  (2013).  performance and cost benefits analysis of double-pass solar collector with and without fins.  - energy conversion and management.  76:8-19. 

mohd. yusof hj. othman, faridah hussain, kamaruzzman sopian, baharuddin yatim & hafidz ruslan.  (2013).  performance study of air-based photovoltaic-thermal (pv/t) collector with different designs of heat exchanger.  - sains malaysiana.  42(9):1319-1325. 

eman sad ashour, mohamad yusof bin sulaiman, mohd hafidz ruslan and kamaruzzaman sopian.  (2013).  a-si:h/sinw shell/core for sinw solar cell applications.  - nanoscale research letters.  8(1):Art no.466. 

yousef a. eltbaakh, m.h. ruslan, m.a. alghoul, m.y. othman, k. sopian & t.m. razykov.  (2012).  solar attenuation by aerosols: an overview.  - renewable and sustainable energy reviews.  16(6):4264-4276. 

dayang fredalina basri, ahmad fudholi and mohd hafidz ruslan.  (2012).  drying characteristics of the borneo canarium odonthophyllum (dabai) fruit.  - american journal of agricultural and biological sciences.  7(3):347-356. 

dayang fredalina basri, ahmad fudholi, mohd hafidz ruslan, mohamad ahmed alghoul.  (2012).  drying kinetics of malaysian canarium odontophyllum (dabai) fruit.  - wseas transactions on biology and biomedicine.  9(3):77-82. 

ahmad fudholi, mohd hafidz ruslan, mohd yusof othman, mohd syahriman mohd azmi, azami zaharim and kamaruzzaman sopian..  (2012).  drying of palm oil fronds in solar dryer with finned double-pass solar collectors..  - wseas transactions on heat and mass transfer.  105-114. 

mohd. yusof hj. othman, ahmad fudholi, kamaruzzaman sopian, mohd. hafidz ruslan & muhammad yahya.  (2012).  analisis kinetik pengeringan rumpai laut gracilaria changii menggunakan sistem pengering suria.  - sains malaysiana.  41(2):245-252. 

yousef a. eltbaakh, m.h. ruslan, m.a. alghoul, m.y. othman, k. sopian.  (2012).  issues concerning atmospheric turbidity indices.  - renewable and sustainable energy reviews.  16(8):6285-6294. 

s. misha, s.mat, m.h.ruslan, k. sopian.  (2012).  review of solid/liquid desiccant in the drying applications and its regeneration methods.  - renewable and sustainable energy reviews.  16:4686-4707. 

b.r. elhab, k. sopian, sohif mat, ch lim, m.y. sulaiman, m.h. ruslan, omidreza saadatian.  (2012).  optimizing tilt angles and orientations of solar panels for kuala lumpur, malaysia.  - scientific research and essays.  7(4):3758-3765. 

r. daghigh, m.h. ruslan, k. sopian.  (2011).  advances in liquid based photovoltaic/thermal (pv/t) collectors.  - renewable and sustainable energy reviews.  15(8):4156-4170. 

yousef a. eltbaakh, m.h. ruslan, m.a. alghoul, m.y. othman, k. sopian, m.i. fadhel.  (2011).  measurement of total and spectral solar irradiance: overview of existing research.  - renewable and sustainable energy reviews.  15:1403-1426. 

ronak daghigh , adnan ibrahim, goh li jin, mohd hafidz ruslan, kamaruzzaman sopian.  (2011).  predicting the performance of amorphous and crystalline silicon based photovoltaic solar thermal collectors.  - energy conversion and management.  52: 1741-1747. 

adnan ibrahim, mohd yusof othman, mohd hafidz ruslan, sohif mat, kamaruzzaman sopian.  (2011).  recent advances in flat plate photovoltaic/thermal (pv/t) solar collectors.  - renewable and sustainable energy reviews.  352-365. 

mahmud m. alkilani, k. sopian, m.a. alghoul, m. sohif, m.h. ruslan.  (2011).  review of solar air collectors with thermal storage units.  - renewable and sustainable energy reviews.  15:1476-1490. 

ahmad fudholi, kamaruzzaman sopian, mohd hafidz ruslan,
mohd. yusof othman and muhammad yahya.  (2011).  analytical and experimental studies on the thermal efficiency of the double-pass solar air collector with finned absorber.  - american journal of applied sciences.  8(7):716-723. 

ahmad fudholi, kamaruzzaman sopian, mohd hafidz ruslan,
mohd. yusof othman and muhammad yahya.  (2011).  thermal efficiency of double pass solar collector with longitudinal fins absorbers.  - american journal of applied sciences.  8(3):254-260. 

ronak daghigh, adnan ibrahim, goh li jin, mohd hafidz ruslan, kamaruzzaman sopian.  (2011).  predicting the performance of amorphous and crystalline silicon based photovoltaic solar thermal collectors.  - energy conversion and management.  1741-1747. 

li jin goh, mohd yusof othman, sohif mat, hafidz ruslan, kamaruzzaman sopian.  (2011).  review of heat pump systems for drying application.  - renewable and sustainable energy reviews.  15:4788-4796. 

f. hussain, m. y. h. othman, b. yatim, h. ruslan, k. sopian, z. anuar, s. khairuddin.  (2011).  fabrication and irradiance mapping of a low cost solar simulator for indoor testing of solar collector.  - journal of solar energy engineering.  133(4):Art. no. 044502. 

a. fudholi, k. sopian, m.h. ruslan, m.a. alghoul, m.y. sulaiman.  (2010).  review of solar dryers for agricultural and marine products.  - renewable and sustainable energy reviews.  14(1):1-30. 

ronak daghigh, mohd hafidz ruslan, mohamad yusof sulaiman, kamaruzzaman sopian.  (2010).  review of solar assisted heat pump drying systems for agricultural and marine products.  - renewable and sustainable energy reviews.  14:2564-2579. 

goh li jin, adnan ibrahim, yee kim chean, roonak daghigh, hafidz ruslan, sohif mat, mohd. yusof othman and kamaruzzaman sopian.  (2010).  evaluation of single-pass photovoltaic-thermal air collector with rectangle tunnel absorber.  - american journal of applied sciences.  7(2):277-282. 

adnan ibrahim, goh li jin, roonak daghigh, mohd huzmin mohamed salleh, mohd yusof othman, mohd hafidz ruslan, sohif mat and kamaruzzaman sopian.  (2009).  hybrid photovoltaic thermal (pv/t) air and water based solar collectors suitable for building integrated applications.  - american journal of environmental sciences.  5(5):618-624. 

lim chin haw, kamaruzzaman sopian, yusof sulaiman, m. hafidz, m. yahya.  (2009).  assessment of public perception on photovoltaic application in malaysia urban residential areas using trudgill`s framework for analysis.  - european journal of social sciences.  8(4):589-603. 

adnan ibrahim, m.y. othman, m.h. ruslan, m.a. alghoul, m. yahya, a. zaharim and k. sopian.  (2009).  performance of photovoltaic thermal collector (pvt) with different absorbers design.  - wseas transactions on environment and development.  5(3):321-330. 

mohd yusof hj othman, hafidz ruslan, kamaruzzaman sopain & goh li jin.  (2009).  kajian prestasi pengumpul suria fotovoltan-terma (pv/t) dengan plat penyerap lengkuk-v.  - sains malaysiana.  38(4):537-541.