@article{DAN_1996_349_3_a5,
     author = {E. G. Pytkeev},
     title = {$Z_\sigma$-mappings of $K$-analytic spaces},
     journal = {Doklady Akademii Nauk},
     pages = {306--307},
     publisher = {mathdoc},
     volume = {349},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_349_3_a5/}
}