@article{DAN_1968_178_1_a8,
     author = {V. V. Proizvolov},
     title = {The cardinality of systems of open subsets in a dyadic bicompactum},
     journal = {Doklady Akademii Nauk},
     pages = {38--39},
     publisher = {mathdoc},
     volume = {178},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_1_a8/}
}