Thomas, J. S., A. Malliga, and S. Sethurajan. “Significance of Umbilical Artery Doppler Velocimetry in the Perinatal Outcome of Growth Restricted Fetuses”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 3, Feb. 2018, pp. 1074-8, doi:10.18203/2320-1770.ijrcog20180895.