• Author: Aschoff, J. R. Wever
• Title: Circadian period and phase-angle difference in chaffinches (Fringilla coelebs L.)
• Year: 1966
• Reference Type: Journal Article
• Journal/Book Title: Comp Biochem Physiol
• Volume: 18
• Issue: 2
• Pages: 397-404
• Date of Publication: Tuesday, 20 December 1966