@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},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1998},
     zbl = {0928.49030},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/JFAA_1998__4_2_59573/}
}