1. Punched Cards, Their Applications to Science and Industry;Casey,1951
2. Calculation of survival rates for cancer;Berkson;Mayo Clin Proc,1950
3. Maximum utilization of the life table method in analyzing survival;Cutler;J Chronic Dis,1958
4. Review of 500 cases of infertility;Raymont;Int J Fertil,1969
5. A clinical study of 240 infertile couples;Frank;Amer J Obstet Gynec,1950