1. A comparison of N-butylscopolammonium bromide and butorphanol tartrate for analgesia using a balloon model of abdominal pain in ponies;Boatwright;Can J Vet Res,1996
2. Comparative analgesia of xylazine, xylazine/morphine, xylazine/butorphanol, and xylazine/nalbuphine in the horse, using dental dolorimetry;Brunson;Am J Vet Res,1987
3. Combined use of detomidine with opiates in the horse;Clarke;Equine Vet J Suppl,1988
4. Sedative and cardiovascular effects of romifidine, alone and in combination with butorphanol, in the horse;Clarke;J Vet Anaesth,1991
5. Opioids;Coda,2006