@article{VMUMM_1994_1_a2,
     author = {S. M. Ageev},
     title = {Extensor properties of orbit spaces and the problem of the continuation of an action},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {11--16},
     publisher = {mathdoc},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1994_1_a2/}
}