• Author: Johnsson, A. H. G. Karlsson W. Engelmann
• Title: Phase shifts in the Kalanchoe petal rhythm, caused by light pulses of different duration. A theoretical and experimental study
• Year: 1973
• Reference Type: Journal Article
• Journal/Book Title: J. {C}hronobiol.
• Volume: 1
• Pages: 147--156
• Date of Publication: Thursday, 20 December 1973