%0 Journal Article %A Kevin Sturm %T A structure theorem for shape functions defined on submanifolds %J Interfaces and free boundaries %D 2016 %P 523-543 %V 18 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/372/ %R 10.4171/ifb/372 %F 10_4171_ifb_372