1. Correlation of endometrial biopsy and plasma progesterone levels in infertile women;Cooke;Journal of Obstetrics and Gynaecology of the British Commonwealth,1972
2. Menstrual dysfunction due to emotional factors;Fremont-Smith;American Journal of Obstetrics and Gynecology,1948
3. Stimulation of human spermatozoal motility by caffeine;Haesungcharern;Fertility and Sterility,1973
4. Artificial insemination. A study of 156 successful cases;Langer;International Journal of Fertility,1969
5. Congenital defects and the age of spermatozoa;Marshall;International Journal of Fertility,1968