Joshi, P., M. Chouhan, N. Choudhary, and A. Singh. “Role of Sildenafil Citrate Therapy in Pregnant Women With Foetal Growth Restriction and Oligohydrominos from Northern India”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 8, no. 1, Dec. 2018, pp. 165-8, doi:10.18203/2320-1770.ijrcog20185416.