References:
David Bergamini, Mathematics (New York: Time, Inc., Life Science Library, 1963), Chapter 4.
Juithlynee Carson, "Fibonacci Numbers and Pineapple Phyllotaxy," Two-Year College Mathematics Journal,
June 1978, pp. 132-136.
James Newman, The World of Mathematics (New York: Simon and Schuster, 1956). "Crystals and the
Future of Physics," pp. 871-881, "On Being the Right Size," pp. 952-957, and "The Soap Bubble,"
pp. 891-900.
Radiolaria:
http://www.ucmp.berkeley.edu/protista/radiolaria/rads.html