TY  - BOOK
AU  - Katok,A & Hasselblatt,B
ED  - Hasselblatt, B
TI  - Introduction to the modern theoy of dynamical systems
T2  - Encyclopedia of mathematics & its applications
SN  - 0521575575
U1  - 12 
PY  - 1999///
CY  - Cambridge
PB  - Cambridge University Press
ER  -