@article{MAN_1992__292_2_164910,
     author = {W. Hansen and V. Andrievskii},
     title = {Isoperimetric inequalities for capacities in the plane.},
     journal = {Mathematische Annalen},
     pages = {191--196},
     publisher = {mathdoc},
     volume = {292},
     number = {2},
     year = {1992},
     url = {http://geodesic.mathdoc.fr/item/MAN_1992__292_2_164910/}
}