Devliyal, Himani, and S.S Agarwal. 2014. “Formulation, Development and Evaluation of Anti-Implantation Activity of Intrauterine System of Centchroman (Saheli) Using Wistar Albino Rats”. PharmaTutor 2 (5), 128-32. http://www.pharmatutorjournal.com/index.php/pt/article/view/103.