@article{MZ_1983__182_173279,
     author = {Friedrich Tomi and Karl-Heinz Sch\"uffler},
     title = {Ein {Indexsatz} f\"ur {Fl\"achen} konstanter mittlerer {Kr\"ummung.}},
     journal = {Mathematische Zeitschrift},
     pages = {245--258},
     publisher = {mathdoc},
     volume = {182},
     year = {1983},
     zbl = {0486.53006},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__182_173279/}
}