Al-Zubaidi, Usama I. M., and Muhammad-Baqir M-R. Fakhrildin. “Influence of Different Concentrations of Sildenafil Citrate on Histological Parameters of Mice Epididymis”. Journal of Biotechnology Research Center 5, no. 2 (June 1, 2011): 55–60. Accessed May 6, 2024. https://jobrc.org/index.php/jobrc/article/view/165.