TY  - DATA
AU  - Anatole Katok
AU  -  Jean-Marie Strelcyn
TI  - Invariant Manifolds, Entropy and Billiards. Smooth Maps with Singularities
T2  - Lecture Notes in Mathematics
SN  - 9783540473497
PY  - 1986///
CY  - Heidelberg
PB  - Springer Berlin
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0099031
ER  -