1. Artificial Insemination;Alexander,1981
2. Infertility after age 30: A false alarm;Bongaarts;Family Planning Perspectives,1982
3. Egg glitch: Too cold or old;Chen;Science News,1990
4. A decade of in vitro fertilization;Edwards;Research in Reproduction,1990
5. Zona blasters;Fackelmann;Science News,1990