%0 Journal Article %A Matteo Rizzi %T Schwarz P surfaces and a non local perturbation of the perimeter %J Interfaces and free boundaries %D 2018 %P 337-352 %V 20 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/404/ %R 10.4171/ifb/404 %F 10_4171_ifb_404