Proceeding of the 2009 International Conference on Oil Palm and the Environment : Harmonizing oil palm with environment: Malaysian Agro Exposition Park Serdang, 14-15 August 2009, p. 207-214
Proceedings of the International Conference on Environmental Research and Technology (ICERT 2010): Research and Innovation towards Environmental Sustainability: Penang (Malaysia), 2-4 June 2010, p. 6-10