TY  - BOOK
AU  - Pontriagin,L.S
TI  - A Course in Ordinary Differential Equations
T2  - International monographs on advanced mathematics and physics
U1  - 517.382 
PY  - 1967///
CY  - Delhi
PB  - Hindustan Pub. Corp. (India), 
KW  - Differential equations
ER  -