@article{CMUC_1983_24_1_a11,
     author = {Sochor, Anton{\'\i}n and Vop\v{e}nka, Petr},
     title = {Shiftings of the horizon},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {127--136},
     year = {1983},
     volume = {24},
     number = {1},
     mrnumber = {703932},
     zbl = {0524.03045},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1983_24_1_a11/}
}