1. 2. AE. Guedel, Inhalation Anesthesia: A Fundamental Guide., 2nd ed. New York: Macmillan, 1951 :10 -62 .
2. 4. LW Hall, and KW. Clarke, Veterinary Anaesthesia., 8th ed. London: Bailliere Tindall, 1983 :34 -50 .
3. THE EFFECTS OF ANESTHETICS ON ACTION POTENTIALS IN THE CEREBRAL CORTEX OF THE CAT