Devi, J., D. Kumar, M. Shukla, and P. K. Jain. “Doppler Interrogation of Fetoplacental Circulation in Hypertensive Disorder of Pregnancy and Their Perinatal Outcomes”. International Journal of Research in Medical Sciences, vol. 5, no. 6, May 2017, pp. 2687-93, doi:10.18203/2320-6012.ijrms20172471.