Jain, Shikha A., and Nisha C. Chakravarti. “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, no. 8 (July 26, 2017): 3381–3386. Accessed December 29, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/3401.