Lopes PCF, Nunes N, Carareto R, et al. Effects of several inspired oxygen fractions on the respiratory dynamics in spontaneously breathing dogs undergoing continuous infusion of propofol. Braz. J. Vet. Res. Anim. Sci. 2007;44(supl.):30-37. doi:10.11606/issn.1678-4456.bjvras.2007.26587