@article{GDZPPN002418983,
title = {Lipschitz Continuous Solutions for Nonlinear Obstacle Problems.},
journal = {Mathematische Zeitschrift},
volume = {154},
year = {1977},
pages = {51-66},
zbl = {0351.35028},
url = {http://dml.mathdoc.fr/item/GDZPPN002418983}
}
Williams, Graham H. Lipschitz Continuous Solutions for Nonlinear Obstacle Problems.. Mathematische Zeitschrift, Tome 154 (1977) pp. 51-66. http://gdmltest.u-ga.fr/item/GDZPPN002418983/