@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/