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nurul aiman mhd safri, zalita zainuddin, mohd syahriman mohd azmi, ahmad fudholi, idris zulkifle, mohd hafidz ruslan.  (2020).  temperature performance of a portable solar greenhouse dryer with various collector design.  - sains malaysiana.  2539-2545. 

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.  (2018).  analytical analysis of solar thermal collector with glass and fresnel lens glazing.  - the 2017 ukm fst postgraduate colloquium, aip conference proceeding.  . 

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.  . 

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).  .