@article{ELMA_1965__20_140810,
     author = {J. Mall},
     title = {Axiomatischer {Aufbau} der sph\"arisch-elliptischen {Geometrie.}},
     journal = {Elemente der Mathematik},
     pages = {97--105},
     publisher = {mathdoc},
     volume = {20},
     year = {1965},
     zbl = {0131.19202},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1965__20_140810/}
}