TY  - BOOK
AU  - Pontryagin,L.S.
AU  - Kacinskas,Leonas
AU  - Counts,Walter B.
TI  - Ordinary differential equations
SN  - 006467133x :
U1  - 517.38 
PY  - 1992///
CY  - Reading, Mass.
PB  - Addison-Wesley
KW  - Differential equations
KW  - Problems, exercise etc
N1  - Includes index; Text in English and Russian
ER  -