TY - JOUR AU - J. Rivera-Letelier TI - Weak hyperbolicity on periodic orbits for polynomials JO - Comptes Rendus. Mathématique PY - 2002 SP - 1113 EP - 1118 VL - 334 IS - 12 PB - Elsevier DO - 10.1016/S1631-073X(02)02413-5 LA - en ID - CRMATH_2002__334_12_1113_0 ER -