1. Bosselmann , F. König , S. Simianer , H 2005 Genetic effects of embryo transfer in dairy cows. Presented at 56th Annual Meeting of Eur. Assoc. Anim. Prod Uppsala, Sweden
2. Genetic aspects of beef production among Holstein-Friesians pedigree selected for milk production;Calo;Journal of Animal Science,1973
3. Testicular gene expression in male mice divergent for fertility after heat stress;Cammack;Theriogenology,2009
4. Feucker , W. Staufenbiel , R 2003 Zentraler Diagnoseschlüssel http://www.portal-rind.de/index.php?module=Downloads&func=prep_hand_out&lid=17
5. Nutrition, metabolism, and fertility in dairy cows: 3. Amino acids and ovarian function;Garnsworthy;Journal of Dairy Science,2008