Kumar, A., and R. Agarwal. “Role and Efficacy of Vaginal Dinoprostone Gel (PGE2) Plus Vaginal Misoprostol (PGE1) in Second Trimester Termination of Pregnancy”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 3, Feb. 2018, pp. 888-91, doi:10.18203/2320-1770.ijrcog20180455.