Towards modernisation of research and technology in herbal industries: proceedings of the seminar on medicinal and aromatic plants: Kuala Lumpur (Malaysia), 24-25 Jul 2001, p. 171-175
Interdisciplinary approaches in natural products research : proceedings of the 16th National Seminar on Natural Products: Selangor (Malaysia), 24-25 Oct 2000, p. 33-38