TY  - BOOK
AU  - 
AU  - Kovacic, Ivana, Ed.
TI  - The duffing equation: nonlinear oscillators and their behaviour
SN  - 9780470715499
U1  - 515.35 
PY  - 2011///
CY  - Chichester
PB  - John Wiley And Sons
KW  - Duffing equations
ER  -