%0 Journal Article %A Giovanni Bellettini %A Maurizio Paolini %A Franco Pasquarelli %T Triple covers and a non-simply connected surface spanning an elongated tetrahedron and beating the cone %J Interfaces and free boundaries %D 2018 %P 407-436 %V 20 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/407/ %R 10.4171/ifb/407 %F 10_4171_ifb_407