TY  - BOOK
AU  - O'Malley Robert E
TI  - Thinking about ordinary differential equations
T2  - Cambridge Texts in Applied  Mathematics
SN  - 0521557429
U1  - B33,1, N7/TD1 
PY  - 1997///
CY  - Cambridge
PB  - Cambridge University Press        
KW  - Differential and Integral Equation
N1  - Bibliography: p 243
ER  -