I. Adler, D. Barabe und R. V. Jean: A History of the Study of Phyllotaxis. In: Annals of Botany. 80(3), 1997, 231–244, doi:10.1006/anbo.1997.0422, online (PDF; 215 kB), auf nicorg.pbworks.com.
Jonathan Swinton, Erinma Ochu, The MSI Turing's Sunflower Consortium: Novel Fibonacci and non-Fibonacci structure in the sunflower: results of a citizen science experiment. In: Royal Society Open Science. 5, 2016, doi:10.1098/rsos.160091.
I. Adler, D. Barabe und R. V. Jean: A History of the Study of Phyllotaxis. In: Annals of Botany. 80(3), 1997, 231–244, doi:10.1006/anbo.1997.0422, online (PDF; 215 kB), auf nicorg.pbworks.com.