Oleskovicz, N.; Valadão, C. A. A.; M, J. C. D.; Farias, A. Preemptive Effects of Epidural S (+) - Ketamine or Ketamine in the horse’s Postincisional Pain. Braz. J. Vet. Res. Anim. Sci. 2006, 43 (1), 24-32. https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26514.