- Ismail, A. Z., Z. Yusop, Z.M. Yusoff, K. A. M. Nassir (2013) Flood simulation and mapping: A case study for Kota Tinggi. JSPS-ACP Comprehensive Seminar, Kyoto. 28 Oct
- Zulkifli Yusop. (2006) Studies on evaluation of logging impacts on soil erosion and watershed ecosystem: Results on Evapotranspiration and Water Yield. The Eco-Frontier Fellowship Workshop 2005, Tokyo, Japan, March, 14.
- Zulkifli Yusop. (2005) Studies on evaluation of logging impacts on soil erosion and watershed ecosystem: Results on Soil and Nutrient Loss. The Eco-Frontier Fellowship Workshop 2004, Tokyo, Japan, March
- Zulkifli Yusop., T. Okuda, M. Hashim, K. Yoshida and S. Numata (2004) Studies on evaluation of logging impacts on soil erosion and watershed ecosystem. The Eco-Frontier Fellowship Workshop 2003, Tokyo, Japan, 3 March.
- Noguchi, S., Abdul Rahim N., Zulkifli Yusop, Baharuddin K, M. Tani, Y. Tsuboyama and T. Sammori (2000) Rainfall-runoff responses to storms at Bukit Tarek Experimental Watershed, Peninsular Malaysia. XXI IUFRO World Congress, Kuala Lumpur, 7-12 August.
- Tani, M., Abdul Rahim N., Zulkifli Yusop., Y. Ohtani, T. Watanabe and S.Noguchi (2000) Evaluating evapotranspiration and surface conductance of a tropical rainforest in Peninsular Malaysia. XXI IUFRO World Congress, Kuala Lumpur, 7-12 August.