Proceedings of Simpomin 2009: Sustainability and Competitiveness of Malaysian Mineral Through R & D: Bukit Merah Laketown Resort, Taiping, Perak, 9-11 Nov 2009, p. 37-48
Proceedings of The National Seminar on Mechanization in Oil Palm Plantation: Towards Improving Productivity Through Mechanization: Selangor (Malaysia), 30 Jun-1 Jul 1998, p. 46-50