1. Adlassnig, C., 2005. Das Fortpflanzungsverhalten des männlichen Feldhamsters (Cricetus cricetus). Diploma thesis, University of Vienna, Austria.
2. Sexual Selection;Anderson,1994
3. Backbier, L.A.M., Gubbels, E.J., Seluga, K., Weidling, U., Zimmermann, W., 1998. Der Feldhamster Cricetus cricetus (L., 1758), eine stark gefährdete Tierart.—Proceedings of the 4th Meeting of the International Hamsterworkgroup, Limburg.
4. Extra-pair copulation and sperm competition in the zebra finch;Birkhead;Nature,1988
5. Prolactin-progesterone antagonism in self regulation of prolactin receptors in the mammary gland;Djiane;Nature,1977