Proceedings of Simpomin 2009: Sustainability and Competitiveness of Malaysian Mineral Through R & D: Bukit Merah Laketown Resort, Taiping, Perak, 9-11 Nov 2009, p. 186-192
Proceedings of the 25th Malaysian Society of Animal production Annual Conference: Natural Products and Nutraceuticals in Animal Production: Melaka (Malaysia), 1-3 August 2003, p. 129-130