On “All regular Landsberg metrics are always Berwald" by Z. I. Szabó. Matveev, Vladimir S. — 2009 Balkan Journal of Geometry and its Applications (BJGA)
Metric with ergodic geodesic flow is completely determined by unparameterized geodesics. Matveev, Vladimir S.; Topalov, Petar J. — 2000 Electronic Research Announcements of the American Mathematical Society [electronic only]