• Author: Sosniyenko, S. R. A. Hut S. Daan A. Sumova
• Title: Influence of photoperiod duration and light-dark transitions on entrainment of Per1 and Per2 gene and protein expression in subdivisions of the mouse suprachiasmatic nucleus
• Year: 2009
• Reference Type: Journal Article
• Journal/Book Title: Eur J Neurosci
• Volume: 30
• Issue: 9
• Pages: 1802-14
• Date of Publication: Sunday, 20 December 2009