Moscow University Mathematics Bulletin > 2019 > 74 > 2 > 62-64
Source
Abstract
Identifiers
journal ISSN : | 0027-1322 |
journal e-ISSN : | 1934-8444 |
DOI | 10.3103/S0027132219020049 |
Moscow University Mathematics Bulletin > 2019 > 74 > 2 > 62-64
journal ISSN : | 0027-1322 |
journal e-ISSN : | 1934-8444 |
DOI | 10.3103/S0027132219020049 |