Rani, M. Jhansi, Edukondalu Vanka, A.M.Sudhakar Babu, and P.Venkatesawara Rao. 2013. “An Overview on Pulsatile Drug Delivery System”. PharmaTutor 1 (2), 17-22. http://www.pharmatutorjournal.com/index.php/pt/article/view/11.