Ferrari, C. G. B., Salinas, P. A. W. e Garrido, S. I. S. (2007) “Milk instability associated with milk composition and seasonal lactation in grazing dairy cows”, Pesquisa Agropecuária Brasileira, 42(12), p. 1785–1791. doi: 10.1590/S1678-3921.pab2007.v42.7763.