1. Spermatozoan transport in cervical mucus;Davajan;Obstet Gynecol Survey,1970
2. Cervical Mucus in Human Reproduction,1973
3. A simple sperm penetration test;Kremer;Int J Fertil,1965
4. Determination of sperm migration rate in small samples of cervical mucus;Carlborg;Endocrinology,1969
5. Evaluation of a capillary tube sperm penetration method for fertility investigations;Ulstein;Acta Obstet Gynecol Scand,1972