Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Sedative-Hypnotic Drugs
Adams & Victors Principles of Neurology Chp 43, pg 1206, Ropper, A.H.,et al, 2014
Localization of Lesions Causing Horner's Syndrome
Arch Ophthamol 44:710, Jaffe,N., 1950