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A. S. Silk, L. K. Fox, D. D. Hancock: Removal of Hair Surrounding the Teat and Associated Bacterial Counts on Teat Skin Surface, in Milk, and Intramammary Infections. In: Journal of Veterinary Medicine, Series B. 50. Jahrgang, Nr.9, 1. November 2003, ISSN1439-0450, S.447–450, doi:10.1046/j.0931-1793.2003.00707.x (englisch).
A. M. Elmoslemany, G. P. Keefe, I. R. Dohoo, B. M. Jayarao: Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 1: Overall risk factors. In: Journal of Dairy Science. 92. Jahrgang, Nr.6, Juni 2009, ISSN0022-0302, S.2634–2643, doi:10.3168/jds.2008-1812 (englisch).