Mannur V.S., Rathi S.M., Mastiholimath V.S., Dengale N.P., and Shinde T.A. 2011. “Stability Indicating RP-HPLC Method Development and Validation of Sildenafil Citrate in Pure Form”. International Journal of Research in Pharmaceutical Sciences 2 (2):187-91. https://ijrps.com/home/article/view/3116.