@article{JRAM_1990__407_153226,
     author = {M.A. Rammaha},
     title = {On the quenching of solutions of the wave equation with a nonlinear boundary condition.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--18},
     publisher = {mathdoc},
     volume = {407},
     year = {1990},
     zbl = {0698.35088},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1990__407_153226/}
}