1. Galilei G, Il Saggiatore (Roma, 1623), Italian translation by L. Sosio, Milano: Feltrinelli; 1979.
2. Thompson d’Arcy, On growth and form, vol. 16, Cambridge: Cambridge University Press; 1917.
3. Kemp M, Seen Unseen: Art, Science, and Intuition from Leonardo to the Hubble Telescope, Oxford University Press; 2006.
4. Ghyka, MC, , The geometry of art and life, New York: Dover Publications; 1977.
5. Coxeter HSM, Regular polytopes. Courier Corporation; 1973.