• Author: Lockley, S. W. D. J. Skene L. J. Butler J. Arendt
• Title: Sleep and activity rhythms are related to circadian phase in the blind
• Year: 1999
• Reference Type: Journal Article
• Journal/Book Title: Sleep
• Volume: 22
• Issue: 5
• Pages: 616-23
• Date of Publication: Monday, 20 December 1999