@article{AIHPC_2012__29_3_335_0,
     author = {De Silva, D. and Roquejoffre, J.M.},
     title = {Regularity in a one-phase free boundary problem for the fractional {Laplacian}},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {335--367},
     publisher = {Elsevier},
     volume = {29},
     number = {3},
     year = {2012},
     doi = {10.1016/j.anihpc.2011.11.003},
     zbl = {1251.35178},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2011.11.003/}
}