@article{MZM_1996_60_6_a5,
     author = {M. M. Zarichnyi},
     title = {Universal $n$-soft maps of $n$-dimensional spaces in absolute {Borel} and projective classes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {845--850},
     publisher = {mathdoc},
     volume = {60},
     number = {6},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_6_a5/}
}