European Journal of Combinatorics > 2010 > 31 > 2 > 617-621
Source
Abstract
Identifiers
journal ISSN : | 0195-6698 |
DOI | 10.1016/j.ejc.2009.03.034 |
European Journal of Combinatorics > 2010 > 31 > 2 > 617-621
journal ISSN : | 0195-6698 |
DOI | 10.1016/j.ejc.2009.03.034 |