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
Psychotropic Drugs and Sleep
BMJ 306:1331-1334, Eisen,J.,et al, 1993