@article{GDZPPN002207532,
title = {On the quenching of solutions of the wave equation with a nonlinear boundary condition.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {405},
year = {1990},
pages = {1-18},
zbl = {0698.35088},
url = {http://dml.mathdoc.fr/item/GDZPPN002207532}
}
Rammaha, M.A. On the quenching of solutions of the wave equation with a nonlinear boundary condition.. Journal für die reine und angewandte Mathematik, Tome 405 (1990) pp. 1-18. http://gdmltest.u-ga.fr/item/GDZPPN002207532/