1. ‘Chinese Dictionary of Crude Drugs’, Shanghai Scientific and Technologic Publisher, Shanghai, 1986, pp. 858–861.
2. ‘A Dictionary of Economic Products of the Malay Peninsula’, Vol. II, Governments of Malaysia and Singapore by the Ministry of Agriculture and Co-operatives, Kuala Lumpur, Malaysia, 1966, p. 2110.
3. , , , ‘The Chinese Materia Medica’, Chinese Medical, Sciences and Technology Publishing House, China, 1996, pp. 467–472.
4. Pharmacopoeia Committee of Chinese Health-Ministry, ‘Pharmacopoeia of China I’, Guandong Technology and Sciences Publishing House, Guangzhou, 1995, p. 167.
5. Novel Alkaloids from the Roots ofStemona sessilifolia