@article{RM_1963_18_5_a21,
     author = {A. S. Mishchenko},
     title = {An example of an irreducible perfect mapping of a~non-normal space onto a~normal space},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1963},
     volume = {18},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_5_a21/}
}