1. Energy balance, milk production and reproduction in grazing crossbred cows in the tropics with and without cereal supplementation;Aguilar-Pérez C.;Livestock Science,2009
2. Scientific opinion on the abiotic risks for public and animal health of glycerine as co-product from the biodiesel production from category 1 animal by-products (ABP) and vegetable oils;Alexander J.;European Food Safety Authority,2010
3. Official methods of analysis,1980
4. Official methods of analysis,1990
5. Official methods of analysis,2007