Interdisciplinary approaches in natural products research : proceedings of the 16th National Seminar on Natural Products: Selangor (Malaysia), 24-25 Oct 2000, p. 48-53
Herbal Globalisation : A New Paradigm for Malaysian Herbal Industry : Proceedings of the Seminar on Medicinal and Aromatic Plants (MAPS 2008): Kuala Lumpur (Malaysia), 21-22 Oct 2008, p. 303
Natural Products R and D: Transforming Rainforest Industries: Proceedings of the 18th Seminar of the Malaysian Natural Products Society: Sabah (Malaysia), 21-24 Oct 2002, p. 53-56