Scala, Mário José Giannasi, et al. “Feeding Behavior and Performance of Dairy Cows During the Transition Period Seven Days before and After Calving”. Semina: Ciências Agrárias, vol. 32, no. 4, Oct. 2011, pp. 1605-16, doi:10.5433/1679-0359.2011v32n4p1605.