@article{DAN_1993_331_4_a3,
     author = {K. A. Rybnikov (jr.)},
     title = {On the density of three-dimensional compacta},
     journal = {Doklady Akademii Nauk},
     pages = {401--403},
     publisher = {mathdoc},
     volume = {331},
     number = {4},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_4_a3/}
}