TY  - BOOK
AU  - Elaydi, Saber N.
TI  - An introduction to differential equations
T2  - Undergraduate texts in mathematics
SN  - 0387988300
U1  - 51535 ELA 
PY  - 1999///
CY  - New York
PB  - Springer
N1  - Includes bibliographical references
ER  -