Lobachevskii Journal of Mathematics > 2019 > 40 > 4 > 507-512
Source
Abstract
Identifiers
journal ISSN : | 1995-0802 |
journal e-ISSN : | 1818-9962 |
DOI | 10.1134/S1995080219040139 |
Lobachevskii Journal of Mathematics > 2019 > 40 > 4 > 507-512
journal ISSN : | 1995-0802 |
journal e-ISSN : | 1818-9962 |
DOI | 10.1134/S1995080219040139 |