TY - JOUR AU - C.C. Conley AU - E. Zehnder TI - The Birkhoff-Lewis Fixed Point Theorem and a Conjecture of V.I. Arnold. JO - Inventiones mathematicae PY - 1983 SP - 33 EP - 50 VL - 73 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1983__73_143034/ ID - IM_1983__73_143034 ER -