Science China Mathematics > 2006 > 49 > 7 > 987-1008
Source
Abstract
Identifiers
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-006-0987-7 |
Science China Mathematics > 2006 > 49 > 7 > 987-1008
journal ISSN : | 1674-7283 |
journal e-ISSN : | 1869-1862 |
DOI | 10.1007/s11425-006-0987-7 |