@article{MOMA_1963__67_177203,
     author = {Frank L\"obell},
     title = {Notiz \"uber einige {Dreiecks\"atze} der absoluten {Geometrie.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {101--103},
     publisher = {mathdoc},
     volume = {67},
     year = {1963},
     zbl = {0151.26103},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1963__67_177203/}
}