@article{MS2_1957__5_165657,
     author = {PAUL KUSTAANHEIMO},
     title = {On the relation of congruence in finite geometries},
     journal = {Mathematica Scandinavica},
     pages = {197--201},
     publisher = {mathdoc},
     volume = {5},
     year = {1957},
     zbl = {0081.14801},
     url = {http://geodesic.mathdoc.fr/item/MS2_1957__5_165657/}
}