TY  - BOOK
AU  - Sanders,J.A & Verhulst,F
ED  - Verhulst, F
TI  - Averaging methods in nonlinear dynamical systems
T2  - Applied mathematical sciences 59
SN  - 3540962298
U1  - 12.01+11.07 
PY  - 1985///
CY  - New York
PB  - Springer
ER  -