1. R. N. Chopra, S. L. Nayer, I. C. Chopra, A glossary of Indian medicinal plants and supplements, Vol. 3, Publication and Information Directorate, CSIR, New Delhi, 1992.
2. A. Chatterjee, S. C. Prakashi, The treatise on medicinal plants, Publication and Information Directorate, CSIR, New Delhi, Vol. 3, 1994.
3. M. Saiki, M. B. A. Vasconcellos, I. A. A. Sertie, Biol. Trace Elem. Res., 26/27 (1990) 743.
4. Ch.L. Ndiokwere, J. Radiochem. Radioanal. Letters, 85 (1984) 325.
5. N. K. Mumba, J. Csikai, G. Peto, J. Radiochem. Radioanal. Letters, 52 (1982) 382.