@article{CMUC_1968_9_4_a14,
     author = {Frol{\'\i}k, Zden\v{e}k},
     title = {On $B$-spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {651--658},
     year = {1968},
     volume = {9},
     number = {4},
     mrnumber = {0252231},
     zbl = {0183.51302},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1968_9_4_a14/}
}