TY  - BOOK
AU  - Arnold, V.I.
TI  - Geometrical methods in the theory of ordinary differential equations [2nd ed.]
SN  - 0387966498
U1  - 515.35 
PY  - 1988///
CY  - New york
PB  - Springer Verlag
KW  - Mathematics
KW  - Differential equations
ER  -