R Mathur*, Mishra Mahesh, R. K Gautam,. “CONTRACEPTIVE ACTIVITY OF CRUDE AND ETHANOLIC EXTRACTS OF CALOTROPIS GIGANTEA LINN. IN MALE ALBINO RATS”. Journal of Pharmaceutical Research and Opinion, vol. 1, no. 3, Feb. 2014, http://medicaleditor.uk/index.php/jpro/article/view/659.