@article{CMUC_1979__20_3_a6,
     author = {Jir\'asko, Josef},
     title = {Generalized projectivity. {II.}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {483--499},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1979},
     mrnumber = {550450},
     zbl = {0416.16005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979__20_3_a6/}
}