TY  - BOOK
AU  - Coddington, Earl A.
AU  - Levinson, Norman
TI  - Theory of ordinary differential equations
SN  - 9780070992566
U1  - 517.38 
PY  - 1955///
CY  - New York
PB  - Mc Graw Hill
KW  - Differential equations
KW  - Mathematics
N1  - includes bibliographical references (Pages 417-422) and index
ER  -