@article{10_4171_ifb_402,
     author = {Luca Lombardini},
     title = {Approximation of sets of finite fractional perimeter by smooth sets and comparison of local and global s-minimal surfaces},
     journal = {Interfaces and free boundaries},
     pages = {261--296},
     year = {2018},
     volume = {20},
     number = {2},
     doi = {10.4171/ifb/402},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/402/}
}