1. Clinical studies on intrauterine rings especially the present state of contraception in Japan and the experiences in the use of intrauterine rings;Ishihama;Yokohama Med. Bull.,1959
2. Intra-Uterine Contraceptive Devices;Lippes,1962
3. Experience with immediate post-abortion insertions of the IUD;Andolšek,1972
4. Immediate postabortal intrauterine contraceptive device insertion: A double-blind study;Goldsmith;Am. J. Obstet. Gynecol.,1972
5. Experience with immediate postpartum and postabortal IUD insertions;Phantak,1969