Vietnam Journal of Mathematics > 2013 > 41 > 1 > 43-49
Source
Abstract
Identifiers
journal ISSN : | 2305-221X |
journal e-ISSN : | 2305-2228 |
DOI | 10.1007/s10013-013-0007-5 |
Vietnam Journal of Mathematics > 2013 > 41 > 1 > 43-49
journal ISSN : | 2305-221X |
journal e-ISSN : | 2305-2228 |
DOI | 10.1007/s10013-013-0007-5 |