TY  - BOOK
AU  - Krupkova Olga
TI  - Geometry of ordinary variational equations
SN  - 3-540-63832-6
U1  - 515.352 
PY  - 1997///
CY  - Berlin
PB  - Springer-Verlag
KW  - Ordinary differential equations
KW  - Ordinary variational equations
ER  -