Mishra, Sunil, Pallavi Srivastava, S Rath, A Mahdi, S Agarwal, and Vijai Lakshmi. “Synthesis and Biological Evaluation of Sulphonyl Derivatives of Naturally Occurring Chromone Alkaloid of Rohitukine As Anticancer Agents”. Journal of Basic Pharmacology and Toxicology 2, no. 1 (January 20, 2018): 1-7. Accessed December 16, 2018. http://scigreen.com/index.php/JBPT/article/view/42.