@article{MZ_1965__89_170441,
     author = {G\"unter Pickert},
     title = {Zur affinen {Einf\"uhrung} der {Hughes-Ebenen.}},
     journal = {Mathematische Zeitschrift},
     pages = {230--233},
     publisher = {mathdoc},
     volume = {89},
     year = {1965},
     zbl = {0132.40801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1965__89_170441/}
}