Sengodan, S. S., and S. Mathiyalagan. “Doppler Study (cerebroplacental Ratio) As a Predictor of Adverse Perinatal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 12, Nov. 2020, pp. 5068-74, doi:10.18203/2320-1770.ijrcog20205249.