@article{VMUMM_1984_3_a15,
     author = {A. Yu. Volovikov and Nguyen Le Anh},
     title = {The {Vietoris--Begle} theorem},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {70--71},
     publisher = {mathdoc},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1984_3_a15/}
}