1. Anon. (1988). Wealth of India. Publications and Information Directorate, CSIR, New Delhi.
2. Aiyer, K.N. and Kolammal, M. (1964). Pharmacognosy of Ayurvedic drugs. Trivendrum. 8: 26.
3. Barot, S.M.; Jasrai, Y.T. and Mehta, A.R. (1994). In vitro organogenesis from leaf explant in Plantago ovata. In: Advances in Plant Tissue Culture in India. (Edited by P. Tandon), Pragati Prakashan, Meerut, p. 82-86.
4. Bouillenne, R. and Went, F.W. (1933). Recherches experimentales sur la neoformation des racines dans les plantules ef les boutures des plantes supericures. Annales du Jardin botanique de Buitenzorg, 43: 25-202.
5. Chi, Gek-Lan and Pau, Eng-Chang (1989). Ethylene inhibitors enhanced de novo shoot regeneration from cotyledons of Brassica campestris ssp. Chinensis (Chinese cabbage) in vitro. Plant Sci., 64: 243-250.