@article{article9dbafad9,
title   = {Effects of dietary urea levels on milk protein fractions of Holstein cows},
author = {Aquino, Adriana Augusto and Lima, Ygor Vinícius Real de and Botaro, Bruno Garcia and Alberto, Camilla Silva da Silveira and Peixoto Júnior, Kleber da Cunha and Santos, Marcos Veiga dos},
year = {2008},
doi = {10.1016/j.anifeedsci.2007.03.005},
journal   = {Animal Feed Science and Technology}
}