TY  - BOOK
AU  - Katok Anatole
AU  - Hasselblatt Boris
TI  - Introduction to the modern theory of dynamical systems
SN  - 0-521-57557-5
U1  - 515.352 
PY  - 1999///
CY  - Cambridge
PB  - CUP
KW  - Dynamical systems
ER  -