TY  - BOOK
AU  - Boyce, William. E. 
AU  - Diprima, Richard. C. 
TI  - Elementary Differential Equations and Boundary Value Problems 
SN  - 0471089559 
U1  - 510 BOY  
PY  - 1997///
CY  - New York
PB  - John Wiley & Sons
ER  -