• Author: Pittendrigh, C.S.
• Title: Circadian surfaces and the diversity of possible roles of circadian organization in photoperiodic induction
• Year: 1972
• Reference Type: Journal Article
• Journal/Book Title: Proc Natl Acad Sci U S A
• Volume: 69
• Issue: 9
• Pages: 2734-7
• Date of Publication: Wednesday, 20 December 1972