@article{DAN_1969_187_2_a8,
     author = {Z. I. Kozlova},
     title = {The principle of comparison of indices and the separation theorems for some classes of sets in topological spaces of weight $\tau$},
     journal = {Doklady Akademii Nauk},
     pages = {266--269},
     publisher = {mathdoc},
     volume = {187},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_2_a8/}
}