• Author: Menaker, M. R. Roberts J. Elliott H. Underwood
• Title: Extraretinal light perception in the sparrow. 3. The eyes do not participate in photoperiodic photoreception
• Year: 1970
• Reference Type: Journal Article
• Journal/Book Title: Proc Natl Acad Sci U S A
• Volume: 67
• Issue: 1
• Pages: 320-5
• Date of Publication: Sunday, 20 December 1970