1. André G., Berentsen P.B.M., Engel В., de Koning C.J.A.M., Oude Lansink A.G.J.M., 2010 - J. Dairy Sci. 93, 942-953.
2. Carlström С., Pettersson G., Johansson К., Strandberg E., Stálhammar H., Philipsson J., 2013 - J. Dairy Sci. 96, 5324-5332.
3. Castro A., Pereira J. M., Amiama C., Bueno J., 2012 - J. Dairy Sci. 95, 929-936.
4. de Koning K., Rodenburg J., 2004 - Automatic milking: State of the art in Europe and North America. W: Automatic Milking: A Better Understanding (A. Meijering, H. Hogeveen, de Koning C.J.A.M., ed.). Wageningen Academic Publishers, Wageningen, the Netherlands.
18. USDA (US Department of Agriculture), 2014 -Livestock Historical Track Records. USDA, National Agricultural Statistical Service, Washington, DC. http://www.nass.usda.gov/Charts_and_Maps/Milk_ Production and Milk Cows/cowrates.asp (dostęp 3.03.2014).