@article{IVM_1978_1_a1,
     author = {B. V. Verbitskii},
     title = {A~global property of matrix-valued functions that depend on several variables},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {8--17},
     publisher = {mathdoc},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1978_1_a1/}
}