TY  - BOOK
AU  - Agarwal , R P
AU  - Regan,  Donal O'
TI  - Introduction to ordinary differntial equations (an)
SN  - 9780387712758
U1  - 517.9 
PY  - 2008///
CY  - New York
PB  - Springer
KW  - DIFFERNTIAL EQUATIONS
KW  - OSCILLATORY EQUATIONS
ER  -