1. Evaluation of male infertility with an in vitro cervical mucus penetration test;Alexander;Fertil Steril,1981
2. Penetration of human ejaculated spermatozoa into human and bovine cervical mucus. II. Pattern and velocity of penetration.;Amit;Int J Fertil,1982
3. Investigation of spermigration in artificial medium.;Bergman;Acta Obstet Gynecol Scand,1958
4. Measurement of linear progression of the human spermatozoon as an index of male fertility.;Botella-Llusia;Int J Fertil,1956
5. Postcoital test in vitro.;Botella-Llusia;Int J Fertil,1960