Science China Mathematics > 2009 > 52 > 4 > 709-719
Source
Abstract
Identifiers
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-008-0146-4 |
Science China Mathematics > 2009 > 52 > 4 > 709-719
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-008-0146-4 |