1. “Low Flow and Closed System Anesthesia.”;Aldrete,1979
2. “Drug Dosage in Laboratory Animals. A Handbook.”;Barnes,1973
3. “Textbook of Veterinary Anesthesia”;Blair,1971
4. “Veterinary Pharmacology and Therapeutics”;Booth,1977
5. Observations on the effect of electro-immobilisation on the dehorning of cattle