TY - JOUR AU - A. Freire AU - R. Mane TI - On the Entropy of the Geodesic Flow in Manifolds Without Conjugate Points. JO - Inventiones mathematicae PY - 1982 SP - 375 EP - 392 VL - 69 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1982__69_142959/ ID - IM_1982__69_142959 ER -