TY  - BOOK
AU  - Perko,Lawrence
TI  - Differential equations and dynamical systems
SN  - 0387974431
PY  - 1991///
CY  - New York
PB  - Springer-Verlag
KW  - Differential equations, Nonlinear
KW  - Differentiable dynamical systems
N1  - Bibliography : p. 395-396
ER  -