Jain, Shikha A., and Nisha C. Chakravarti. 2017. “To Compare the Effects of Intra Vaginal Prostaglandin E1 and Intra-Cervical Prostaglandin E2 for Prelabour Ripening of Unfavorable Uterine Cervix in Nulliparous Women”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6 (8):3381-86. https://doi.org/10.18203/2320-1770.ijrcog20173447.