1. Studies on Impaired Fertility in Man with Special Reference to the Male. Thesis for a Doctoral Degree;Hammen,1944
2. Spermaundersoegelser ved Sterilitet med Specielt Henblik paa Spermiernes Morfologi. Thesis for a Doctoral Degree;Varnek,1944
3. Treatment of Male Infertility;Charny,1968
4. Ultrastructure of the ejaculated human sperm;Pedersen;Z Zellforsch,1969
5. Ultrastructure of the ejaculated human sperm;Pedersen,1969