1. Geodesic flows on closed Riemannian manifolds of negative curvature;Anosov;Proc. Steklov Inst. Math.,1967
2. Definition of chaos;Assaf;Am. Math. Mon.,1992
3. On Devaney's definition of chaos;Banks;Am. Math. Mon.,1992
4. Chaos in Cartan foliations;Bazaikin;Chaos,2020