@article{GDZPPN002330253, title = {An Elementary Partial Regularity Proof for Vector-Valued Obstacle Problems.}, journal = {Mathematische Annalen}, volume = {277}, year = {1987}, pages = {217-226}, zbl = {0609.35011}, url = {http://dml.mathdoc.fr/item/GDZPPN002330253} }
Fuchs, Martin. An Elementary Partial Regularity Proof for Vector-Valued Obstacle Problems.. Mathematische Annalen, Tome 277 (1987) pp. 217-226. http://gdmltest.u-ga.fr/item/GDZPPN002330253/