Hafez, Mona Hafez, and Sara Elsayed El Kazaz. “The Impact of Phosphodiesterase-5 Inhibitor (sildenafil Citrate) on Some Hippocampal Neurotransmitters, Oxidative Stress Status, Minerals, and Anxiety-Like Behavior in Rats”. Journal of Advanced Veterinary and Animal Research 7, no. 2 (June 12, 2020): 281–289. Accessed January 28, 2022. https://www.banglajol.info/index.php/JAVAR/article/view/47522.