Science China Mathematics > 2010 > 53 > 1 > 101-104
Source
Abstract
Identifiers
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-009-0181-9 |
Science China Mathematics > 2010 > 53 > 1 > 101-104
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-009-0181-9 |