Advances in voluntary sterilization proceedings of the second international conference . M. E. Schima, J. Lubell, J. E. Davis and E. Connell (eds.) Excerpta Medica, Amsterdam, 1974 (xiv + 500 pp.) DM 62.50; US$ 24
Haspels, A.A.
(1975) European Journal of Obstetrics & Gynecology and Reproductive Biology, volume 5, issue 5, pp. 297 - 298