@article{AIHPC_2017__34_3_533_0,
     author = {Garofalo, Nicola and Petrosyan, Arshak and Pop, Camelia A. and Smit Vega Garcia, Mariana},
     title = {Regularity of the free boundary for the obstacle problem for the fractional {Laplacian} with drift},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {533--570},
     publisher = {Elsevier},
     volume = {34},
     number = {3},
     year = {2017},
     doi = {10.1016/j.anihpc.2016.03.001},
     zbl = {1365.35230},
     mrnumber = {3633735},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2016.03.001/}
}