1. N. H. Booth, N. H. Booth, and L. E. McDonald. (1988 ) In: Veterinary Pharmacology and Therapeutics , 6th edn. Iowa State University Press, Ames, Iowa, p315 .
2. COMPARATIVE TOXICITY OF DIAMORPHINE, MORPHINE, AND METHADONE
3. PERFUSION OF EACH LUNG DURING DIFFERENTIAL VENTILATION WITH SELECTIVE PEEP