1. Apisariyakul A. 1980. Symp. 80, p. 133
2. Barakat I., Jackson A.H., Abdulla M.I. 1977. Lloydia (Cincin) 40, 471.
3. Boonchuay W. u. Court W.E. 1976. Planta med. 29, 201.
4. Boonkird T. 1971. Kasikorn 44, 443: ref. 1016/Abstr. 5.
5. Boonklinkajorn P. 1972. Kasikorn 45, 107: ref. 1401/Abstr. 6.