@article{VMUMM_1991_4_a6,
     author = {B. A. Pasynkov},
     title = {A factorization theorem for the cohomological dimensions of mappings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--33},
     publisher = {mathdoc},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_4_a6/}
}