Sources and further reading

Crystal symmetry

• Wikipedia: Platonic solid, crystallographic point group, crystallographic restriction theorem• Rees, "Notes on Geometry" (Springer Universitext)• Senechal, "Crystalline symmetries: An informal mathematical introduction"

Quasicrystals

• "Dan Shechtman: 'Linus Pauling said I was talking nonsense'" (The Observer, 6 January 2013)• Wikipedia: Icosahedrite• Bindi-Steinhardt-Yao-Lu, "Icosahedrite, Al63Cu24Fe13, the first natural quasicrystal"• Bindi et al., "Evidence for the extraterrestrial origin of a natural quasicrystal"• "What is… a Quasicrystal?" by Marjorie Senechal (Notices of the AMS)

String theory and mathematics

• Wikipedia: History of string theory, Edward Witten• Thomas, "Mirror symmetry and actions of braid groups on derived categories"