@article{VMUMM_1984_6_a22,
     author = {M. M. Shumafov},
     title = {Diffeomorphisms of three-dimensional discontinuous systems},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {85--88},
     publisher = {mathdoc},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1984_6_a22/}
}