1. Balerna , M. 1989 Immunobiology of the seminal plasma-sperm relationship: reality, problems and some hypotheses Serico , M. G. Waites Recent Advances in Andrology 39 50
2. In vitro interaction between human spermatozoa and human cervical mucus;Barros;Microscopia Electronica y Biologia Cellular,1983
3. The presence of lactoferrin on the human sperm head during in vitro penetration through cervical mucus;Broer;IRSC Med. Sci.,1977