中国科学院数学与系统科学研究院期刊网
AMS
Entropy-expansiveness of Geodesic Flows on Closed Manifolds without Conjugate Points
Fei LIU, Fang WANG
Acta Mathematica Sinica . 2016, (4): 507 -520 .  DOI: 10.1007/s10114-016-5200-5