TY  - BOOK
AU  - Rouche,N & Mawhin,J
ED  - Mawhin, J
TI  - Ordinary differential equations: stability & periodic solutions
T2  - Surveys & reference works in mathematics
U1  - 10.01 
PY  - 1980///
CY  - Boston
PB  - Pitman Advanced Publishing Program
ER  -