Russian Mathematics > 2019 > 63 > 5 > 57-62
Source
Abstract
Identifiers
journal ISSN : | 1066-369X |
journal e-ISSN : | 1934-810X |
DOI | 10.3103/S1066369X19050062 |
Russian Mathematics > 2019 > 63 > 5 > 57-62
journal ISSN : | 1066-369X |
journal e-ISSN : | 1934-810X |
DOI | 10.3103/S1066369X19050062 |