@article{VMUMM_1989_1_a5,
     author = {A. V. Arkhangel'skii and B. M. Bokalo},
     title = {Tangential properties of topological spaces},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--29},
     publisher = {mathdoc},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_1_a5/}
}