1. Ahuja, A.; Verma, M.; Grewal, S. Clonal propagation of Ocimum species by tissue culture. Indian J. Exp. Biol. 20:455–458; 1982.
2. Arora, R.; Bhojwani, S. S. In vitro propagation and low temperature storage of Saussurea lappa C. B. Clarke—an endangered, medicinal plant. Plant Cell Rep. 8:44–47; 1989.
3. Bajaj, Y. P. S.; Furmanowa, M.; Olszowska, O. Biotechnology of the micropropagation of medicinal and aromatic plants. In: Bajaj, Y. P. S., ed. Biotechnology in agriculture and forestry. Vol. 4. Medicinal and aromatic plants I. Berlin, Germany; Springer-Verlag; 1988:60–130.
4. Balachandran, S. M.; Bhat, S. R.; Chandel, K. P. S. In vitro clonal multiplication of turmeric (Curcuma spp.) and ginger (Zingiber officinale Rosc.). Plant Cell Rep. 8:521–524; 1990.
5. Bhat, S. R.; Chandel, K. P. S.; Malik, S. K. Plant regeneration from various explants of cultivated Piper species. Plant Cell Rep. 14:398–402; 1995.