TY  - BOOK
AU  - Mickens, Ronald E.
TI  - AN INTRODUCTION TO NONLINEAR OSCILLATIONS
U1  - 515.355 
PY  - 1981///
CY  - Cambridge
PB  - University Press
KW  - Differential Equations, Nonlinear -- Numerical Solutions
KW  - Approximation Theory
KW  - Nonlinear Oscillations
N1  - Bibliography : P. 218-220
ER  -