@article{GDZPPN001177958,
title = {On Multi-Grid Methods for Variational Inequalities.},
journal = {Numerische Mathematik},
volume = {42},
year = {1983},
pages = {65-76},
zbl = {0497.65042},
url = {http://dml.mathdoc.fr/item/GDZPPN001177958}
}
Hackbusch, W.; Mittelmann, H.D. On Multi-Grid Methods for Variational Inequalities.. Numerische Mathematik, Tome 42 (1983) pp. 65-76. http://gdmltest.u-ga.fr/item/GDZPPN001177958/