R Mathur*, Mishra Mahesh, R. K Gautam,. 2014. “CONTRACEPTIVE ACTIVITY OF CRUDE AND ETHANOLIC EXTRACTS OF CALOTROPIS GIGANTEA LINN. IN MALE ALBINO RATS”. Journal of Pharmaceutical Research and Opinion 1 (3). http://innovativejournal.in/index.php/jpro/article/view/659.