@Article{ CesNov17, author = { Cesaroni, Annalisa and Novaga, Matteo }, title = { The isoperimetric problem for nonlocal perimeters }, journal = { Discrete Contin. Dyn. Syst. S }, year = { 2018 }, volume = { 11 }, number = { 3 }, pages = { 425-440 }, URL = { http://cvgmt.sns.it/paper/3523/ }, note = { cvgmt preprint} }