- Salapour, M., Z. Yusop, Jajarmizadeh, S. Shahid, F. Yusof (2013) A Generalized Feed Forward Network for the Prediction of Runoff in Johor River Basin. Proceedings of the 4 th International Graduate Conference on Engineering, Science and Humanities (IGCESH2013), 16-17 Apr 2013, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Tan Wei Lun, Fadhilah Yusof and Zulkifli Yusop (2012). “Fitting NHMM for Daily Rainfall Amount in Peninsular Malaysia”. Proceeding of the 1st ISM International Statistical Conference 2012. 4 – 6 June 2012. Persada Johor. pp477 – 483
- Interception Loss of Palm Oil Tree in Malaysia. A. A. A. Bakar, M. Lu & Z. Yusop. 22nd Annual Conference (2009). Japan Society of Hydrology and Water Resources.2009.
- Fadhilah Y., Zalina M.D., Nguyen V-T-V and Zulkifli Yusop. (2007) Stochastic modelling of hourly rainfall series using markov-Chain Mixed Exponential Model. Proceedings Simposium Kebangsaan Sains Mmatematik ke XV. Shah Alam, 2-7 June 2007
- Zulkifli Yusop., Chan C. H., Kamarul Azlan M. N. (2006) Upscaling On-Site Model Parameters for Assessing Cumulative Watershed Effects of Runoff. Proceedings of the National Water Conference, Port Dickson, 13&14 July
- Chong, H., Zulkifli Yusop. , Ayob K (2006) Rainfall-Runoff Characteristics in a Small Oil Palm Catchment. Proceedings of the National Water Conference, Port Dickson, 13&14 July.
- Nordila A., Zulkifli Yusop. and Zalina M.D. (2006) Characterization of Convective Rain in Klang Valley. Proceedings of the National Water Conference, Port Dickson, 13&14 July.
- Zulkifli Yusop., Geoffery J., Saw A. L., T. Norul S. Preliminary study on throughfall spatial variability and stemflow characteristics under oil palm catchment. Proceedings of the National Water Conference, Port Dickson, 13&14 July.
- Fadhilah Y , Zalina M.D., Nguyen V-T-V, Zulkifli Yusop. (2006) Stochastic modeling of rainfall using Neyman-Scott Rectangular Pulse (NSRP) Model. Proceedings of the National Water Conference, Port Dickson, 13&14 July.
- Siti Nazahiya R., and Zulkifli Yusop. (2006) Storm water quality from urban residential catchment in Skudai, Johor. Proceedings of the National Water Conference, Port Dickson, 13&14 July.
- Zulkifli Yusop., Chan C. H., Ayob K. and Mushairry (2005). Hydrological Properties of Forested and Oil Palm Catchments. Proceedings of the Seminar Kejuruteraan Awam, Univ Teknologi Malaysia, Johor
- Siti Nazahiyah R. and Zulkifli Yusop. (2005) Modeling of Storm Water Runoff From Residential and Commercial Catchments in Skudai, Johor Using Storm Water Management Model (SWMM). Proceedings of the National Civil Engineering Conference (NASEC) 2005: 564-573.
- Chan, C.H., Zulkifli Yusop and Chong H. (2005) Rainfall-runoff characteristics and modeling of an oil palm catchment. In: Jamaludin M.J., Kadir A., Azahan A., Kadaruddin A. and Muhamad Rizal R. Proceedings of Pengurusan Persekitaran 2005.
- Siti Nurhidayu A.B. and Zulkifli Yusop. (2005) Water quality and non-point source pollution loading from oil palm catchments. In: Jamaludin M.J., Kadir A., Azahan A., Kadaruddin A. and Muhamad Rizal R. Proceedings of Pengurusan Persekitaran 2005.
- Zulkifli Yusop, S. N. Rahmat, Kamarul Azlan M. N., M. Mohamaed (2004) Runoff quality and pollution loadings from residential and commercial catchments in skudai, Johor. Proceedings of the Seminar Kejuruteraan Awam, Univ Teknologi Malaysia, Johor
- Zulkifli Yusop., Yong W.K. and Jamaludin S (2003) Assessment of hydrological drought using run analysis and Herbst method in Pekan, Pahang. In Wan Ruslan Ismail, Narimah Samat, Aziz Abdul Majid, Moha Asri Abdullah & Anisah Lee Abdullah (eds.) Proceedings of the Conference on Society, Space and Environment in a Globalised World. Penang.
- Zulkifli Yusop., Chan, C.H. & Abdul Rahim (2003) Modelling of stormflow hydrographs in forested catchments using HEC-HMS. In Jamaluddin M.J., Ismail S., Kadir A., Mohd Jailani M.N., Kamaruzaman S. and Md. Fauzi A. (eds.) Pengurusan Persekitaran 2003, 484-493.
- Zulkifli Yusop. Cham S.Y. & Chong J.H. (2003) Rainfall interception by old rubber stands. In Jamaluddin M.J., Ismail S., Kadir A., Mohd Jailani M.N., Kamaruzaman S. and Md. Fauzi A. (eds.) Pengurusan Persekitaran 2003, 272-279.
- Zulkifli Yusop. and Maketab M. (2002) Translating results of catchment research into management perspective: A chalange. In Jamaluddin M. J. and Mohd Jailani M.N. (eds.) Proceedings National Seminar on Environmental Management : Current development and Future Planning, UKM 14-15 August 2002.
- Maketab M. and Zulkifli Yusop. (2002) Design of sediment oxygen demand (SOD) “in-situ” measuring chamber and its application in several rivers. In: Jamaluddin M. J. and Mohd Jailani M.N. (eds.) Proceedings National Seminar on Environmental Management : Current development and Future Planning, UKM 14-15 August 2002
- Mohd Shahwahid H.O., Awang Noor A.G., Abdul Rahim N. and Zulkifli Yusop. (1998) Watershed protection versus timber production in the Hulu Langat Forest Reserve. In Lee S.S., Dan Y.M., Ian, D.G. and Joshua B. (eds.) Proceedings of the Malaysia-United Kingdom Programme Workshop on Conservation, Management and Forest Resources, 21-24 Oct. 1996, pg. 290-299
- Abdul Rahim N., Zulkifli Yusop. and Baharuddin K. (1994) Effectiveness of conservation measures in selective logging practices. In: S. Appanah, K.C. Khoo, H.T. Chan, H.T. Hong (eds.) Proceeding of Conference on Forestry and Forest Product s Research, FRIM, November 1-2, 1993.
- Zulkifli Yusop. (1994) Effects of supervised and unsupervised selective logging methods on hydrologic nutrient losses in Malaysia. In: Ghulam M.H. (ed.) Proceedings of the Soil Science Conference of Malaysia 1991. Genting Highland, 3-4 March 1991
- Zulkifli Yusop. and Saifuddin S. (1993) Litterfall and nutrient fluxes in a logged‑over forest of Bukit Tarek Forest Reserve. In: Aziz and A.R. Hamid (eds.) Proceedings of Soil Science Conference of Malaysia 1992, Kuala Terengganu, 27‑28 Apri, Malaysian Society of Soil Science, pp. 147-156.
- Amir H.S., Klaus, B. and Zulkifli Yusop. (1993) Conservation and silvicultural measures undertaken in opening of forest land for cattle industry in Sintok, Kedah. In: Aziz and A.R. Hamid (eds.) Proceedings Soil Science Conference of Malaysia 1992, Kuala Terengganu, 27‑28 April, Malaysian Society of Soil Science, pp 230-253.
- Zulkifli Yusop., Abdul Rahim N. and Baharuddin K. (1991) Hydrological impacts of forestry and land‑use practices in Malaysia. In: S. Appanah, F.S.P. Ng and Roslan I. (eds.) Proceedings of the Conference on Forestry and Forest Products Research, 3‑4 Oct. 1990, Forest Research Institute Malaysia, Kepong, KL, pp 96‑106.