@article{MZM_1982_31_5_a12,
     author = {V. T. Dmitrienko and V. G. Zvyagin},
     title = {Homotopy classification of a class of continuous mappings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {801--812},
     publisher = {mathdoc},
     volume = {31},
     number = {5},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_31_5_a12/}
}