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@article{JFAA_1998__4_2_59573, author = {L.A. Caffarelli}, title = {The {Obstacle} {Problem} {Revisited.}}, journal = {The journal of Fourier analysis and applications [[Elektronische Ressource]]}, pages = {383--402}, publisher = {mathdoc}, volume = {4}, number = {2}, year = {1998}, zbl = {0928.49030}, url = {http://geodesic.mathdoc.fr/item/JFAA_1998__4_2_59573/} }
L.A. Caffarelli. The Obstacle Problem Revisited.. The journal of Fourier analysis and applications [[Elektronische Ressource]], Tome 4 (1998) no. 2, pp. 383-402. http://geodesic.mathdoc.fr/item/JFAA_1998__4_2_59573/