Brown, C C Effects of L-tryptophan on sleep onset insomniacs. [electronic resource] - Waking and sleeping Apr 1979 - 101-8 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0340-0905 Subjects--Topical Terms: Clinical Trials as TopicDouble-Blind MethodElectroencephalographyHumansRegression AnalysisSleep--drug effectsSleep Initiation and Maintenance Disorders--drug therapySleep, REMTime FactorsTryptophan--therapeutic use