PageHeader : Funkcialaj Ekvacioj, 26 (1983), 237-250 Title : Energy Decay of the Wave Equation with Title : a Nonlinear Dissipative Term*) AuthorInfo : By AuthorInfo : Mitsuhiro NAKAO AuthorInfo : (Kyushu University, Japan) section : 0. Introduction. section : 1. Preliminary results. section : 2. Dacay estimate. section : 3. Further result for the case $\beta(u_{t})=u_{t}+\beta_{0}(u_{t})$ . section : 4. Final remarks. section : References