Ghosh, S., B. Ghosh, and S. Jha. “Role of Exogenous Carbohydrate and Amino Acid Sources on Biomass and Colchicine Production in Nontransformed Root Cultures of Gloriosa Superba”. Plant Tissue Culture and Biotechnology, vol. 25, no. 2, Jan. 2016, pp. 247-56, doi:10.3329/ptcb.v25i2.26258.