@article{10_4171_ifb_336,
     author = {Nicola Fusco and Vesa Julin},
     title = {On the regularity of critical and minimal sets of a free interface problem},
     journal = {Interfaces and free boundaries},
     pages = {117--142},
     year = {2015},
     volume = {17},
     number = {1},
     doi = {10.4171/ifb/336},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/336/}
}