@article{10_4171_ifb_35,
     author = {Georg S. Weiss},
     title = {An obstacle-problem-like equation with two phases: pointwise regularity of the solution and an estimate of the {Hausdorff} dimension of the free boundary},
     journal = {Interfaces and free boundaries},
     pages = {121--128},
     year = {2001},
     volume = {3},
     number = {2},
     doi = {10.4171/ifb/35},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/35/}
}