Beier, Suzane Lilian, et al. “Effects of the Morphine-Lidocaine-Ketamine Combination on Cardiopulmonary Function and Isoflurane Sparing in Sheep”. Semina: Ciências Agrárias, vol. 35, nº 5, novembro de 2014, p. 2527-38, doi:10.5433/1679-0359.2014v35n5p2527.