@article{CMUC_1973_14_1_a0,
     author = {Balcar, Bohuslav},
     title = {A theorem on supports in the theory of semisets},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {1--6},
     year = {1973},
     volume = {14},
     number = {1},
     mrnumber = {0340015},
     zbl = {0281.02060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1973_14_1_a0/}
}