TY  - BOOK
AU  - Barreira. L
AU  - Valls, B
TI  - Odinary Differential equations: qualitative theory
SN  - 9780821887493
U1  - 517.91 
PY  - 2012///
CY  - USA
PB  - AMS
KW  - DIFFERENTIAL EQUATION
KW  - QUALITATIVE THEORY
ER  -