New Dimensions and Challenges for Sustainable Livestock Farming: Proceedings of the 11th Animal Science Congress: The Asian-Australasian Association of Animal Production Societies. Vol.2: Kuala Lumpur (Malaysia), 5-9 Sep 2004, p. 162-163
Plant protection in the tropics: proceedings of Fourth International Conference on Plant Protection in the Tropics: Kuala Lumpur, Malaysia, 1994, p. 56-58