1. Embrey MP, Hillier K, Mahendran P: Termination of pregnancy by extra-amniotic prostaglandins and the synergistic effect of oxytocin. Adv Bio-sciences 9:507, 1973.
2. Bygdeman M, Beguin F, Toppozada M, et al: Intrauterine administration of prostaglandin F2α for induction of abortion. Adv Biosciences 9:525, 1973.
3. Lauersen NH, Wilson KH: Continuous extraovular administration of prostaglandin F2α for midtrimester abortions. Am J Obstet Gynecol. 120:273, 1974.
4. Lange AP, Secher NJ, Thomsen-Pedersen G: Induction of therapeutic abortion using either extra-amniotic prostaglandin F2α or hypertonic saline followed by oxytocin. Prostaglandins 6:149, 1974.
5. Bygdeman M: Comparison of prostaglandin and hypertonic saline for termination of pregnancy. Obstet Gynecol. 52:424, 1978.