• Author: Archer, S. N. D. L. Robilliard D. J. Skene M. Smits A. Williams J. Arendt M. Von Schantz
• Title: A length polymorphism in the circadian clock gene Per3 is linked to delayed sleep phase syndrome and extreme diurnal preference
• Year: 2003
• Reference Type: Journal Article
• Journal/Book Title: Sleep
• Volume: 26
• Issue: 4
• Pages: 413-5
• Date of Publication: Saturday, 20 December 2003