TY - JOUR AU - Smania, Daniel TI - Puzzle geometry and rigidity: The Fibonacci cycle is hyperbolic JO - Journal of the American Mathematical Society PY - 2007 SP - 629 EP - 673 VL - 20 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-07-00550-4/ DO - 10.1090/S0894-0347-07-00550-4 ID - 10_1090_S0894_0347_07_00550_4 ER -