Douady, S. and Y. Couder. 2002. Phyllotaxis as a physical self-organized growth process. Physical Review Letters 68(March 30):2098-2101. Abstract available at http://dx.doi.org/10.1103/PhysRevLett.68.2098.
Hotton, S. 1999. Symmetry of Plants. Ph.D. Thesis, UC Santa Cruz. Available at http://maven.smith.edu/~phyllo/Assets/pdf/thesis.pdf.
Huntley, H.E. 1970. The Divine Proportion: A Study in Mathematical Beauty. New York: Dover. See http://store.doverpublications.com/0486222543.html.
Peterson, I. 2006. Fibonacci’s missing flowers. Science News Online (June 3). Available at http://sciencenews.org/articles/20060603/mathtrek.asp.
______. 2002. Golden blossoms, pi flowers. Science News Online (Aug. 31). Available at http://sciencenews.org/articles/20020831/mathtrek.asp.
______. 2001. Fibonacci’s Chinese calendar. Science News Online (Feb. 3). Available at http://www.sciencenews.org/articles/20010203/mathtrek.asp.
Reinhardt, D., T. Mandel, and C. Kuhlemeier. 2000. Auxin regulates the initiation and radial position of plant lateral organs. Plant Cell 12(April):507-518. Available at http://www.plantcell.org/cgi/content/full/12/4/507.
Smith, R.S. . . . D. Reinhardt, et al. 2006. A plausible model of phyllotaxis. Proceedings of the National Academy of Sciences 103(Jan. 31):1301-1306. Available at http://www.pnas.org/cgi/content/full/103/5/1301.
For more information about plant growth patterns, go to http://maven.smith.edu/~phyllo/.
For more information about Fibonacci numbers and the golden ratio, go to http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fib.html.