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@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/} }
B. V. Verbitskii. A~global property of matrix-valued functions that depend on several variables. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1978), pp. 8-17. http://geodesic.mathdoc.fr/item/IVM_1978_1_a1/