@article{VMUMM_1989_4_a2,
     author = {E. V. Gavrushenko},
     title = {$d$-properties of topological spaces},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {10--13},
     year = {1989},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_4_a2/}
}