@article{DAN_1984_277_2_a5,
     author = {A. N. Dranishnikov},
     title = {Absolute extensors in the dimension $n$ and $n$-soft mappings},
     journal = {Doklady Akademii Nauk},
     pages = {284--287},
     publisher = {mathdoc},
     volume = {277},
     number = {2},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_2_a5/}
}