1. Rosenberg HM, National Center for Health Statistics. Seasonal variation of birth: United States 1933–63 Vital and Health Statistics, Series A, No. 9 (PHS publication no. 1000). Washington, DC, U.S. Government Printing Office, 1966.
2. Seasonality of infertility in Matab, Bangaladesh;Becker;J Biosoc Sci,1981
3. Seasonality of birth in human population;Lam;Soc Biol,1991
4. Factors influencing pregnancy rates following in vitro fertilization and embryo transfer;Wood;Fertil Steril,1985
5. In vitro fertilization;Casper;Fertil Steril,1988