choong, c.y..  (2021).  the richness and uniqueness of dragonflies and damselflies of frasers hill as a treasure for ecotourism.  - proceedings of the fraser's hill symposium 2020.  128-131. 

choong chee yen, mahadimenakbar mohamed dawood.  (2021).  dragonflies and damselflies (odonata) of kadamaian, kinabalu park, sabah.  - journal of tropical biology and conservation.  71-79. 

choong c.y..  (2021).  diversity of odonata (insecta) at bukit kinta forest reserve, perak, malaysia.  - seminar saintifik geobiotrail gunung korbu 2021.  123-130. 

choong c.y..  (2021).  gunung machinchang cambrian geoforest park.  - .  236. 

rory a. dow, rambli ahmad, stephen g. butler, chee yen choong, jongkar grinang, yong foo ng, robin w.j. ngiam, graham t. reels, philip o.m. steinhoff, joanes unggang.  (2021).  previously unpublished odonata records from sarawak, borneo, part vi: miri division including checklists for niah, lambir hills, loagan bunut and pulong tau national parks.  - faunistic studies in se asian and pacific island odonata.  1-94. 

rory a. dow, chee yen choong.  (2021).  previously unpublished odonata records from sarawak, borneo, part vii: odonata from limbang division.  - faunistic studies in se asian and pacific island odonata.  1-18. 

wan juliana wa., choong cy., norela s., salmah y., mohd taib fs., izfa riza h., zulkifli na., mansor ms., rahim f., hardy aac., ruzi mar., zabidi, my., faizi, z., kadri, s. & lilia halim.  (2020).  see natureŽ stem mentoring an experiential learning on environmental conservation through bio-inspired innovation activities.  - the teaching & learning congress & innovation competition (knovasi 2020).  1-3. 

chee yen choong, rory a. dow & yong foo ng.  (2020).  additional records of odonata from kelantan and terengganu, malaysia.  - international dragonfly fund report.  1-30. 

rory a. dow, quoc toan phan & chee yen choong.  (2020).  protosticta joepani sp. nov. from borneo with notes on p. kinabaluensis laidlaw, 1915 (odonata: zygoptera: platystictidae).  - zootaxa.  371-387. 

choong c.y..  (2020).  hutan ulu sat: nadi pemeliharaan alam semulajadi kelantan.  - .  8. 

choong c.y., dg fazrinah a.d., muhamad amirul ashraf a.a., chung a.y.c., maryati m..  (2020).  diversity of odonata species at kangkawat, imbak canyon, sabah.  - journal of tropical biology and conservation.  1-10. 

choong c.y..  (2020).  bukit fraser - kepelbagaian biologi dan persekitaran fizikal.  - .  7. 

binoy kurian, a.s. hemanthakumar, joemon jacob, wickneswari ratnam, c.y. choong, prabalee sarmah, s. shefeek, vishnu v. nair, s. v. sajithkumar, k.k. sabu.  (2020).  intraspecific genetic variability, differentiation and evolutionary relationships revealed through microsatellite loci in seven economically important calamus species.  - journal of forestry research.  1899-1911. 

choong chee yen, ng yong foo, wee suk ling, izfa riza hazmi, nurul wahida othman, salmah yaakop, norela sulaiman, maimon abdullah.  (2019).  biodiversity in oil palm plantation malaysia.  - .  37. 

steinhoff, p.o.m., ahmad, r., butler, s.g., choong, c.y., dow, r.a., reels, g.t..  (2019).  odonata of gunong mulu national park in sarawak, malaysian borneo.  - journal of the international dragonfly fund.  1-50. 

choong, c.y. & chung, a.y.c..  (2019).  odonata fauna of imbak canyon conservation area, sabah.  - journal of tropical biology and conservation.  1-8. 

choong c.y..  (2019).  odonata fauna of pulau pangkor, perak, peninsular malaysia.  - the malaysian forester.  271-276. 

choong chee yen, hanisah ali, ng yong foo.  (2018).  a natural heritage the flora and fauna of universiti kebangsaan malaysia.  - .  4. 

aqilah sakinah badrulisham, chee yen choong.  (2018).  siri penyelidikan sains sekitaran dan sumber alam 2018.  - .  4. 

choong, c.y., alwen, b.m. & tan, c.c..  (2018).  odonata (insecta) fauna of taman negara national park, malaysia.  - serangga.  . 

choong, c.y., alwen, b.m., tan, c.c..  (2018).  odonata of sungai dusun wildlife reserve, selangor, peninsular malaysia.  - journal of wildlife and parks.  . 

khairul maisarah kahar, wan juliana wan ahmad, choong chee yen, norela sulaiman, salmah yaakop, farah shafawati mohd taib, izfa riza hazmi, nadiatur akmar zulkifli, mohammad saiful mansor, faszly rahim, hardy a.a. chin, mohamad ruzi abdul rahman et al..  (2018).  see natureŽ an experiential learning on biodiversity and conservation through community engagement.  - the 4th joint international seminar of universiti kebangsaan malaysia and gifu university 2018.  . 

wan juliana wan ahmad, norela sulaiman, choong chee yen, salmah yaakop, saiful mansor, izfa riza hazmi, nadiatur akmal zulkifli, farah shafawati mohd taib, faszly rahim, hardy a. a & chin et al..  (2018).  see natureŽ pembelajaran kepelbagaian biologi berasaskan pengalaman dan pemuliharaan melalui penglibatan masyarakat.  - rampai penyelidik siri 6: stem untuk komuniti.  . 

nurfarhana hizan hijas, tan kok kiat, ajla rafidah baharom & choong chee yen.  (2018).  pepatung dan pepatung jarum petunjuk pencemaran.  - dewan kosmik.  42-46. 

rory a. dow, chee yen choong & yong foo ng.  (2018).  re-description of coeliccia erici laidlaw, and the description of coeliccia sameerae sp. nov. from peninsular malaysia (odonata: zygoptera: platycnemididae).  - zootaxa.  . 

dow, r.a., choong, c.y., robi, n.j., butler, s.g., ngiam, r.w.j. and reels, g.t..  (2018).  odonata from the lanjak entimau wildlife sanctuary, sarawak.  - journal if the international dragonfly fund.  1-50. 

mohd hafifi hashim, mushrifah idris, yosni bakar and c.y. choong.  (2018).  genetic relationships of hemibagrus nemurus in tasik chini biosphere reserve based on d-loop sequences.  - malayan nature journal.  55-65. 

kalaivani nadarajah, ratnam wickneswari & choong chee yen.  (2017).  applications of high technology for varietal improvement of rice.  - .  5. 

hamidun bunawan, choong chee yen, salmah yaakop & normah mohd noor.  (2017).  phylogenetic inferences of nepenthes species in peninsular malaysia revealed by chloroplast (trnl intron) and nuclear (its) dna sequences.  - bmc research notes.  1-6. 

wickneswari ratnam, kalaivani nadarajah & choong chee yen.  (2017).  applications of high technology for varietal improvement of rice.  - .  140. 

rory a. dow, chee yen choong & yong foo ng.  (2017).  drepanosticta rahmani sp. nov., from kedah, malaysia (odonata: zygoptera: platystictidae).  - zootaxa.  44-50. 

chee yen choong, rory a. dow & yong foo ng.  (2017).  new records of odonata from kelantan, malaysia, with a checklist of species recorded from the state.  - journal of the international dragonfly fund.  1-22. 

rory a. dow, chee yen choong & yong foo ng.  (2017).  new records of odonata from kedah, malaysia in september 2016, with a checklist of species recorded from the state.  - journal of the international dragonfly fund.  1-18. 

choong c.y..  (2017).  gunung basor dan tasik pergau kelantan.  - .  5. 

wickneswari ratnam, chee yen choong & muhammad asif javed.  (2017).  crop improvement sustainability through leading-edge technology.  - .  18. 

choong, c.y., alwen, b.m., izzat husna, m. and amirrudin, b.a..  (2017).  odonata fauna of tioman island, pahang, peninsular malaysia.  - journal of wildlife and parks.  31-40. 

chee yen choong, yasser mohamed arifin & nurfarhana hijan hijas.  (2017).  ancient creatures: dragonflies and damselflies of malaysia.  - .  115. 

sri a`jilah samsir, hamidun bunawan, choong chee yen, normah mohd noor.  (2016).  dataset of fourier transform-infraredcoupled with chemometric analysis used to distinguish accessions of garcinia mangostana l. in peninsular malaysia.  - data in brief.  1-5. 

choong chee yen .  (2016).  kepelbagaian odonata di tasik chini.  - impak: tasik chini@ukm.  12-13. 

c.y. choong, m. izzat-husna & b.a. amirrudin.  (2016).  odonata (insecta) fauna of tasek bera ramsar site, pahang, peninsular malaysia.  - journal of wildlife and parks.  39-48. 

siti nabilah, h.a. & choong, c.y..  (2016).  analisis morfometrik neurothemis fluctuans (odonata: libellulidae) di semenanjung malaysia.  - simposium sains dan teknologi - siri penyelidikan sains sekitaran dan sumber alam.  . 

kishenjit, s. & choong, c.y..  (2016).  analisis morfometrik copera vittata (odonata) di semenanjung malaysia.  - simposium sains dan teknologi - siri penyelidikan sains sekitaran dan sumber alam.  . 

b. norfazlina1, r. wickneswari and c.y. choong.  (2016).  geographical distribution of musa gracilis holttum in peninsular malaysia.  - the 2016 ukm fst postgraduate colloquium, aip conference proceedings.  1-5. 

sri a`jilah samsir, hamidun bunawan, choong chee yen & normah mohd noor.  (2016).  dataset of ssr markers for the issr-suppression-pcr to detect genetic variation in garcinia mangostana l. in peninsular malaysia.  - data in brief.  1438-1442. 

choong, c.y..  (2016).  leptogomphus tioman sp. nov. (odonata: anisoptera: gomphidea) from tioman island, peninsular malaysia.  - zootaxa.  382-388. 

rory a. dow, chee yen choong & yong foo ng.  (2016).  records of odonata from perlis, malaysia in august 2015, with a checklist of species recorded from the state.  - faunistic studies in south-east asian and pacific island odonata : journal of the international fragonfly fund.  1-22. 

chee yen choong, m. izzat husna & amirrudin b. ahmad.  (2016).  odonata (insecta) fauna of royal belum, perak, peninsular malaysia.  - proceedings of the 4th royal belum scientific expedition 2015.  1-7. 

choong c.y. & wickneswari r..  (2016).  sexing in rattans.  - malaysian applied biology.  1-10. 

mohd shafeea leman, choong chee yen, tanot unjah, chew ming yee, lim chun sian, ng seh cheong, noorsiha ayob & qalam azad rosle.  (2015).  crystal fortress gombak selangor quartz ridge.  - .  15-55. 

salmah yaakop, choong chee yen, izfa riza hazmi, wan juliana wan ahmad, mohamad ruzi abdul rahman & mohd arrabe` ahmad baei.  (2015).  see nature : serangga.  - .  43. 

c.y. choong.  (2015).  odonata (insecta) fauna of fraser`s hill, peninsular malaysia.  - prosiding seminar saintifik koridor raub-bukit fraser 2015 (seskorfra 2015).  70-74. 

dow, r.a. & choong, c.y..  (2015).  mortonagrion megabinluyog spec. nov. from brunei (odonata: zygoptera: coenagrionidae).  - zootaxa.  89-93. 

ng, c.y., wickneswari, r. and choong, c.y..  (2014).  identification of floral genes for sex determination in calamus palustris griff. by using suppression subtractive hybridization.  - genetics and molecular research.  6037-6049. 

chee yen choong.  (2014).  odonata (insecta) fauna of krau wildlife reserve, pahang, malaysia.  - journal of wildlife and parks.  73-80. 

pang, s.l., ong, s.s., lee, h.h., zamri, z., kandasamy, k.i., choong, c.y. and wickneswari, r..  (2014).  isolation and characterization of ccoaomt in the interspecific hybrid of acacia auriculiformis x acacia mangium - a key gene in lignin biosynthesis.  - genetics and molecular research.  7217-7238. 

hanisah, a., ng, y.f. & choong, c.y..  (2013).  study on male secondary genitalia of seven species of orthetrum newman (odonata: libellulidae) in peninsular malaysia.  - serangga.  31-45. 

abdul munir hj. abdul murad, choong chee yen, eddie shahril ismail, mohamad yusof maskat, mohd salmi md noorani, nazlina ibrahim, nurul huda bt abdul karim, redzuan yahya, rozida mohd khalid, wan r.  (2013).  the 2013 ukm fst postgraduate colloquium.  - proceedings of the universiti kebangsaan malaysia, faculty of science and technology 2013 postgraduate colloquium/aip publishing.  . 

a. sukganah, c. y. choong, j. russell, d. neale, r. wickneswari.  (2013).  nucleotide sequence analysis of two lignin genes in acacia auriculiformis × acacia mangium hybrid for enhancement of wood pulp quality.  - tree genetics and genomes.  9(5):1369-1381. 

chung, a.y.c., majapun, r., khoo, e., yukang, j.l., tajuddin, m.a., nilus, r. and choong, c.y..  (2013).  fascinating little flying dragons of sungai imbak forest reserve, sabah.  - malaysian naturalist.  . 

han chern loh, pek yee tang, shiau foon tee, tze jen chow, chee yen choong, shen yang lim and hoi sen yong.  (2013).  neuregulin-1 (nrg-1) and its susceptibility to schizophrenia: a case-control study and meta-analysis.  - psychiatry research.  208(2):186-188. 

chee yen choong and denise s.l. cheah.  (2013).  odonata of ayer hitam forest reserve, johor, peninsular malaysia.  - faunistic studies in south-east asian and pacific island odonata.  2:1-11. 

nery sofiyanti and choong chee yen.  (2012).  morphology of ovule, seed and pollen grain of rafflesia r. br. (rafflesiaceae).  - bangladesh journal of plant taxonomy.  19(2):109-117. 

y.f. ng, c.y. choong and r.a. dow.  (2012).  odonata records from kuala tahan, pahang, peninsular malaysia in december 2010.  - notulae odonatologicae.  7(9):77-88. 

rory a. dow, yong foo ng & chee yen choong.  (2012).  odonata of sungai bebar, pahang, malaysia, with four species recorded for the first time from mainland asia.  - journal of threatened taxa.  4(3):2417-2426. 

chee yen choong, yong foo ng, rory a. dow.  (2012).  odonata (insecta) from three forests of central terengganu, malaysia.  - malayan nature journal.  64(2):95-104. 

hamidun bunawan, chee yen choong, badrul munir md-zain, syarul nataqain baharum and normah mohd noor.  (2011).  molecular systematics of polygonum minus huds. based on its sequences.  - international journal of molecular sciences.  7626-7634. 

y. f. ng, r. a. dow, and c. y. choong.  (2011).  new records of odonata (insecta) from the cameron highlands, with first records of two species for malaysia.  - journal of science and technology in the tropics.  7:9-16. 

s.y.c. yong, c.y. choong, p.l. cheong, s.l. pang, r. nor amalina, j.a. harikrishna, m.n. mat isa, p. hedley, l. milne, r. vaillancourt, r. wickneswari.  (2011).  analysis of ests generated from inner bark tissue of an acacia auriculiformis x acacia mangium hybrid.  - tree genetics and genomes.  7(1):143-152. 

choong c.y..  (2011).  a short report on the iucn indo-burma freshwater biodiversity assessment review workshop, vientiane, lao pdr, 17 - 22 january, 2011.  - agrion.  . 

choong c.y..  (2010).  hutan simpan bintang hijau, perak - pengurusan hutan, persekitaran fizikal dan kepelbagaian biologi.  - .  21:228-232. 

ng, y.f. and choong, c.y..  (2010).  bio-kejuruteraan penilaian ekosistem & spesies 2010 bukit fraser: kesihatan persekitaran untuk kesejahteraan masa hadapan.  - .  45-50. 

norma-rashid, y., choong, c.y. and ng, y.f..  (2010).  the dragonfly fauna (adults) of the lanjak entimau sanctuary.  - seminar on biodiversity of the lanjak entimau wildlife sanctuary - hidden jewel of sarawak.  . 

choong c.y..  (2010).  hutan simpan gunung angsi, negeri sembilan - pengurusan hutan, persekitaran fizikal dan kepelbagaian biologi.  - .  21:213-219. 

rory a. dow, chee yen choong & yong foo ng.  (2010).  a review of the genus amphicnemis in peninsular malaysia and singapore, with descriptions of two new species (odonata: zygoptera: coenagrionidae).  - zootaxa.  2605:45-55. 

kalkman, vj; choong, cy; orr, ag; schutt, k.  (2010).  remarks on the taxonomy of megapodagrionidae with emphasis on the larval gills (odonata).  - international journal of ondotology.  13(1):119-135. 

rory a. dow, chee yen choong, yong foo ng.  (2010).  elattoneura mauros sp. nov. (odonata: zygoptera: protoneuridae) from sarawak, malaysian borneo.  - zootaxa.  2502: 65-68. 

fadilawati, a., choong, c.y., ng, y.f. and zainal-abidin, b.a.h..  (2010).  male anisopteran odonata secondary gentalia: variation among libellulidae genera from tasik chini pahang, malaysia.  - malaysia journal of micorscopy.  6:131-136. 

choong cy, orr ag.  (2010).  the larva of podolestes orientalis from west malaysia, with notes on its habitat and biology (odonata: megapodagrionidae).  - international journal of odonatology.  13(1):109-117. 

k.nadarajah,c.y,.choong,s.j.leong and r.wickneswari.  (2009).  functional prediction of calamus manan inflorescence ests through motif detection.  - biotechnology.  8(3):329-342. 

kalaivani nadarajah, leong shang jye, choong chee yen and wickneswari ratnam.  (2009).  identification of floral ests from calamus manan inflorescence library.  - biosciences, biotechnology research asia.  6(1):7-16. 

choong, c.y., wong, y.k., khatijah, h. and wickneswari, r..  (2009).  characterization of flowering gene frigida in calamus palustris.  - 8th malaysia congress on genetics.  . 

choong, c.y., wickneswari, r. and fatimah, s..  (2009).  survival and sex ratio of a planted rattan calamus palustris griff. population: implication to seed production and management.  - journal of biological sciences.  9(6):633-636. 

m.s. nur fariza,s.l. pang, c.y.choong, r.wickneswari.  (2008).  extensive dna sequence variations in two lignin genes, cinnamate 4-hydroxylase and cinnamyl alcohol dehydrogenase from acacia mangium and acacia auriculiformis.  - journal of biological sciences.  8(3):687-690. 

chee choong, bert orr, rory dow.  (2008).  checklist of dragonflies of ukm campus, including bangi forest reserve, bangi, selangor, malaysia.  - echo.  . 

fadilawati, a., choong, c.y., ng, y.f. & zainal abidin, a.h..  (2008).  kepelbagaian pepatung (odonata) di kawasan tasik chini pahang, malaysia.  - proceedings of the 10th msab symposium, kuching.  . 

c.y. choong, r. wickneswari, m. norwati, r.j. abbott.  (2008).  phylogeny of hopea (dipterocarpaceae) inferred from chloroplast dna and nuclear pgic sequences.  - molecular phylogenetics and evolution.  48:1238-1243. 

r. abd-shukor, halimah abdullah sani, supian samat, abdul ghani rafek, musa ahmad, mohd salmi md noorani, suriah abdul rahman, abdul razak daud, hamzah mohamed, suzana shahar,choong chee yen,zaidi isa.  (2008).  jurnal sains malaysiana.  - jurnal sains malaysiana.  37(2). 

radhiah zakaria , chee yen choong and ibrahim faridah-hanum.  (2007).  systematic study on guttiferae juss. of peninsular malaysia based on plastid sequences.  - tropics.  16(2):141-150. 

dow, r.a., choong, c.y. & orr, a.g..  (2007).  two new species of chalybeothemis from malaysia, with a redefinition of the genus (odonata: libellulidae).  - international journal of odonatology.  10(2):171-184. 

lee k.s., wickneswari r. and choong c.y.  (2007).  stand structure and the genetic diversity of koompassia malaccensis and dryobalanops aromatica in unlogged and logged-over stands..  - sains malaysiana.  36(2):233-242. 

choong, c.y..  (2007).  dragonflies (insecta: odonata) of kuala pertang and kuala koh at taman negara national park kelantan.  - journal of wildlife and parks.  24:57-61. 

nadarajah, k., choong, c.y., leong, s.j., thi, b.k., hedley, p. and waugh, r..  (2006).  est analysis in calamus manan miq..  - journal of tropical plant physiology.  1(1):1-11. 

pang, s.l., choong, c.y. and wickneswari, r..  (2006).  molecular cloning and characterization of cinnamyl alcohol dehydrogenase cdna from interspecific hybrid acacia mangium x acacia auriculiformis.  - journal of tropical plant physiology.  1(1): 89-99. 

raja zalinda, r.j., choong, c.y., & idris, a.b..  (2006).  preliminary study on odonate of the sungai chongkak recreation forest, selangor and the pasoh forest reserve, negeri sembilan.  - serangga.  11(1-2):53-67. 

sukganah a., wickneswari r., choong c.y..  (2005).  full length cdna for cinnamoyl-coa reductase (ccr) and caffeic acid o-methyltransferase (comt) in acacia mangium willd. x acacia auriculiformis cunn. ex benth. hybrid.  - proceedings from a seminar on current updates on acacia genomics and breeding, putrajaya.  . 

chun hock sim, mansor clyde mahani, chee yen choong, idris salma.  (2005).  transferability of ssr markers from lychee (litchi chinensis sonn.) to pulasan (nephelium ramboutan-ake l.).  - fruits.  60:379-385. 

pang s.l., choong c.y., wickneswari r..  (2005).  isolation and characterization of c4h, ccoaomt and cad from interspecific hybrid acacia mangium x acacia auriculiformis.  - proceedings from a seminar on current updates on acacia genomics and breeding, putrajaya.  . 

yong s.y.c., wickneswari r., choong c.y..  (2005).  construction of genomic library for screening full length genes related to wood formation in acacia hybrid.  - proceedings from a seminar on current updates on acacia genomics and breeding, putrajaya.  . 

choong c.y., yong s.y.c., cheong p.l., pang s.l., harikrishna j.a., mohd noor m.i., wickneswari r..  (2005).  analyses of ests generated from inner bark tissues of acacia hybrid.  - proceedings from a seminar on current updates on acacia genomics and breeding, putrajaya.  . 

liew w. y., wickneswari r. & choong c. y..  (2005).  development of est-ssr markers for acacia hybrid (a. mangium x a. auriculiformis).  - proceedings from a seminar on current updates on acacia genomics and breeding, 12 july 2005, marriott hotel, putrajaya.  .