1. Male sterilization;Schmidt,1970
2. Bryon, D. and Cole, S. G.: A Sourcebook of Vasectomy. Texas Christian University Press, Behavioral Science Monograph Series, Number 72-1, 1972.
3. Vasectomy—reviewed;Hackett;Amer. J. Obst. Gynec.,1973
4. Biometry;Sokal,1969
5. Spontaneous recanalisation of the divided vas deferens;Pugh;Brit. J. Urol.,1969