R. R. and V. Thendral, “Prediction of perinatal outcome with umbilical artery Doppler in IUGR fetuses- a prospective analytical study in a tertiary medical college in Tamilnadu, India”, Int J Reprod Contracept Obstet Gynecol, vol. 6, no. 3, pp. 1097–1104, Feb. 2017.