@article{MZ_1964__83_170235,
     author = {Rolf Lingenberg},
     title = {\"Uber die {Gruppe} einer projektiven {Dualit\"at.}},
     journal = {Mathematische Zeitschrift},
     pages = {367--380},
     publisher = {mathdoc},
     volume = {83},
     year = {1964},
     zbl = {0116.38002},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__83_170235/}
}