TY  - BOOK
AU  - Brauer,Fred
AU  - Nohel,John A.
TI  - The qualitative theory of ordinary differential equations: an introduction 
PY  - 1969///
CY  - New York
PB  - W. A. Benjamin.
KW  - Differential equations
KW  - Stability
N1  - Bibliography: p. 302-303
ER  -