@article{ELMA_1953__8_140587,
     author = {Karl Strubecker},
     title = {Kinematik, {Liesche} {Kreisgeometrie} und {Geraden-Kugel-Transformation.}},
     journal = {Elemente der Mathematik},
     pages = {4--13},
     publisher = {mathdoc},
     volume = {8},
     year = {1953},
     zbl = {0050.37704},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1953__8_140587/}
}