1. Indian medicinal plants a compendium of 500 species. vol.2. Aryavaidya sala, Kottakkal, Orient Langman Limited 1994; 345‐ 46. And Indian Materia Medica, Dr. K.M.Nadkarni’s, Vol. I, edited by A.K. Nadkarni, Popular Prakashan, Bombay 1982, 466.
2. R.E. Holttum, MA.SC.D,F.L.S; A revised flora of Malaya, by Vol. II, ferns of Malaya. Government Singapore.
3. 3. Nighantu adarsha (harardha) Bapalal G. Vaidya
4. 4. Indian Medicinal Plants, Kirtikar K.R and Basu B.D. Indian Medicinal Plants vol. 4 Periodical experts book agency, Delhi 2nd edition 1993, 2747.
5. Nayar S.L. Pub. Publications and information directorate CSIR (science and culture 1950‐51, 232; Burkil I‐862)
6. Viswanatha. M.B. Industry meet cum seminar on Bio‐diversity and Information on medicine and aromatic plants. .Z‐Yue Hygiene medicine licence E.c. No. 116050. Patent No. ZL 943086.
7. Ran Ruijin, from Dah medical college, yunnab province China. Am j Chin. Med. 1996.24(1): 77‐82.
8. Elixir Tonics and Teas, (310) 867‐9300‐ Revised, July 1999,Botanic Health Resources.
9. Ramesh N et al. Phytochemical and antimicrobial studies on Drynaria quercifolia.
10. Tanaka T, Nonaka G and Nishioka I. Punicafolin, an ellagitannin from the leaves of Punicagranatum. Phytochemistry. 1985; 24(9): 2075‐2078.