1. Smithcors, J.F. in Textbook of Veterinary Anesthesia (ed. Soma, L.R.) 14 (Williams and Wilkins, Baltimore, 1971).
2. [No authors listed]. Fifty-eight years ago in Anesthesia & Analgesia. B. Bolliger, K. Maddox: Experimental anesthesia with tri-bromethyl alcohol (Avertin) and sodium iso-amyl-ethyl-barbiturate (Amytal). Current Researches in Anesthesia and Analgesia: 1931; 10: 112–115. Anesth. Analg. 68(4), 540 (1989).
3. Reynolds, J.E.F. (ed.) Martindale: The Extra Pharmacopoeia 29th Edn. 760 (The Pharmaceutical Press, London, 1982).
4. Soma, L.R. in Textbook of Veterinary Anesthesia (ed. Soma, L.R.) 147 (Williams and Wilkins, Baltimore, 1971).
5. Green, C.J. in Laboratory Animal Handbook 8 (Laboratory Animals Ltd., London, 1979).