@article{CMUC_1970_11_3_a14,
     author = {Havl{\'\i}\v{c}ek, Karel and Tietze, J\"urgen},
     title = {Zur {Geometrie} der endlichen {Ebene} der {Ordnung} $n=4$ {(Vorl\"aufige} {Mitteilung)}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {593--594},
     year = {1970},
     volume = {11},
     number = {3},
     mrnumber = {0273511},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1970_11_3_a14/}
}