Acta Mathematica Sinica, English Series > 2019 > 35 > 4 > 569-576
Source
Abstract
Identifiers
journal ISSN : | 1439-8516 |
journal e-ISSN : | 1439-7617 |
DOI | 10.1007/s10114-019-7403-z |
Acta Mathematica Sinica, English Series > 2019 > 35 > 4 > 569-576
journal ISSN : | 1439-8516 |
journal e-ISSN : | 1439-7617 |
DOI | 10.1007/s10114-019-7403-z |