@article{01547175,
title = {Exponential stability for the wave equation with weak nonmonotone damping.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {57},
year = {2000},
pages = {285-310},
zbl = {0963.35127},
language = {en},
url = {http://dml.mathdoc.fr/item/01547175}
}
Martinez, P.; Vancostenoble, J. Exponential stability for the wave equation with weak nonmonotone damping.. Portugaliae Mathematica. Nova Série, Tome 57 (2000) pp. 285-310. http://gdmltest.u-ga.fr/item/01547175/