• Author: Gwinner, E.
• Title: Circannual rhythms: mechanisms and functions. (4. Sympos.: Biolog. Rhythmen)
• Year: 1992
• Reference Type: Journal Article
• Journal/Book Title: Verh. Dtsch. Zool. Ges.
• Volume: 85
• Issue: 2
• Pages: 201-215
• Date of Publication: Sunday, 20 December 1992