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@article{IVM_1959_1_a2, author = {V. M. Borok}, title = {Numerical characteristics of systems correct in the sense of {Petrovski\u{i}}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {16--22}, publisher = {mathdoc}, number = {1}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1959_1_a2/} }
V. M. Borok. Numerical characteristics of systems correct in the sense of Petrovskiĭ. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1959), pp. 16-22. http://geodesic.mathdoc.fr/item/IVM_1959_1_a2/