1. One thousand vasectomies;Barnes;Brit. Med. J.,1973
2. Investigation of fertility after vasectomy by means of eosin differential staining (vital staining) of the spermatozoa;Berthelsen;Ugeskr. Laeger.,1979
3. Disappearance of spermatozoa from ejaculate after vasectomy;Marwood;Brit. Med. J.,1979
4. Effect of irrigation of vas deferens on sperm analyses after vasectomy;Lehtonen;Ann. Chir. Gynaec. Fenn.,1975
5. Zur Physiologie der Samenblasen und der Spermien;Boeminghaus;Ztschr. f. Urol.,1934