1. Pregnancies after intracytoplasmic injection of a single spermatozoon into an oocyte;Palermo;Lancet,1992
2. Semen analysis;Overstreet,1997
3. WHO Manual for the Examination of Human Semen and Semen-Cervical Mucus Interaction,1987
4. The male factor in infertility: semen analysis;Mortimer;Curr. Probl. Obst. Gynec.,1985
5. The semen analysis;Keel,1990