TY  - BOOK
AU  - Mickens, Ronald E.
TI  - Truly nonlinear oscillations: harmonic balance, parameter expansions, lteration, and averaging methods
SN  - 9789814291651
U1  - 511.4 
PY  - 2010///
CY  - New Jersey
PB  - World Scientific
KW  - Approximation theory
KW  - Nonlinear oscillations
ER  -