@article{CMUC_1979_20_4_a6,
     author = {Sochor, Anton{\'\i}n},
     title = {Metamathematics of the alternative set theory. {I}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {697--722},
     year = {1979},
     volume = {20},
     number = {4},
     mrnumber = {555184},
     zbl = {0433.03028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979_20_4_a6/}
}