Shrestha, U, I Shrestha, RK Ghimire, and S Paudel. 2014. “Reference Values of Fetal Peak Systolic Velocity in the Middle Cerebral Artery at 19–40 Weeks of Gestation in Nepalese Population”. Nepal Journal of Obstetrics and Gynaecology 8 (2):42-45. https://nepjol.info/index.php/NJOG/article/view/9769.