@article{MZ_1987__194_251860,
     author = {C.M. Edwards and G.T. R\"uttimann},
     title = {Erratum to },
     journal = {Mathematische Zeitschrift},
     pages = {457--458},
     year = {1987},
     volume = {194},
     zbl = {0612.46017},
     url = {http://geodesic.mathdoc.fr/item/MZ_1987__194_251860/}
}