Gopinath, G., B. Jose, P. Ravichandran, and K. Satheeshkumar. “Tissue Culture of Ophiorrhiza Mungos L., a Prospective Method for the Production of an Anticancer Drug, Camptothecin”. Plant Science Today, vol. 5, no. 1, Jan. 2018, pp. 1-8, doi:10.14719/pst.2018.5.1.359.