@article{MZ_1922__15_167711,
     author = {H. Beck},
     title = {Der {Fundamentalsatz} der {Lieschen} {Kugelgeometrie} im {Euklidischen} {Raum}},
     journal = {Mathematische Zeitschrift},
     pages = {159--167},
     publisher = {mathdoc},
     volume = {15},
     year = {1922},
     zbl = {48.0691.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1922__15_167711/}
}