1. Plum F, Posner JB. Diagnosis of stupor and coma. 3rd ed. Philadelphia: FA Davis; 1980.
2. Spencer PS. Biological principles of chemical neurotoxicity. In: Spencer PS, Schaumburg HH, editors. Experimental and clinical neurotoxicology. 2nd ed. New York: Oxford University Press; 2000. p. 3–54.
3. Adams RD, Victor M, Ropper AH. Principals of neurology. 6th ed. New York: McGraw-Hill; 1997. p. 344–66.
4. DeFeudis FV. Overview-GABA A receptors. Ann N Y Acad Sci. 1990;585:231–40.
5. Snyder SH. Drug and neurotransmitter receptors: new perspectives with clinical relevance. JAMA. 1989;261:3126–9.