%0 Journal Article %A Dimitrios E. Panayotounakos %A Efstathios E. Theotokoglou %A Michalis P. Markakis %T Exact analytic solutions for the damped Duffing nonlinear oscillator %J Comptes Rendus. Mécanique %D 2006 %P 311-316 %V 334 %N 5 %I Elsevier %R 10.1016/j.crme.2006.03.009 %G en %F CRMECA_2006__334_5_311_0