@article{SM_1971_13_1_a5,
     author = {N. Hadzhiivanov},
     title = {Extension of mappings into spheres and countable decompositions of {Tikhonov} cubes},
     journal = {Sbornik. Mathematics},
     pages = {117--136},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_13_1_a5/}
}