Suryavanshi, M. R., and S. S. Katakdhond. “Efficacy of Doppler Velocimetry of the Umbilical Artery in the Defined High-Risk Groups to Determine the Fetal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 8, no. 5, Apr. 2019, pp. 1724-32, doi:10.18203/2320-1770.ijrcog20191543.