@article{MZ_1968__103_170911,
     author = {Hubert Tietz},
     title = {Umkehrs\"atze f\"ur das {Summierverfahren} von {Le} {Roy.}},
     journal = {Mathematische Zeitschrift},
     pages = {201--218},
     publisher = {mathdoc},
     volume = {103},
     year = {1968},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1968__103_170911/}
}