Advances in plant science: Proceedings of the 15th Malaysian Society of Plant Physiology conference: Port Dickson, Negeri Sembilan (Malaysia), 14-16 Sep, 2004, p. 20-22
Synergistic Approach to Appropriate Forestry Technology for Sustaining Rainforest Ecosystems: Proceedings International Forestry Seminar: Sarawak (Malaysia), 7-9 Mar 2005, p. 207-214