Doklady Mathematics > 2019 > 100 > 2 > 436-439
Source
Abstract
Identifiers
journal ISSN : | 1064-5624 |
journal e-ISSN : | 1531-8362 |
DOI | 10.1134/S1064562419050090 |
Doklady Mathematics > 2019 > 100 > 2 > 436-439
journal ISSN : | 1064-5624 |
journal e-ISSN : | 1531-8362 |
DOI | 10.1134/S1064562419050090 |