S.  Harne, Sharma, A., Dhaygude, M., Joglekar, S., Kodam, K. M., and Hudlikar, M., ?Novel route for rapid biosynthesis of copper nanoparticles using aqueous extract of Calotropis procera L. latex and their cytotoxicity on tumor cells?, Colloids and Surfaces B-Biointerfaces, vol. 95, pp. 284-288, 2012.