European Journal of Combinatorics > 2012 > 33 > 4 > 474-476
Source
Abstract
Identifiers
journal ISSN : | 0195-6698 |
DOI | 10.1016/j.ejc.2011.10.009 |
European Journal of Combinatorics > 2012 > 33 > 4 > 474-476
journal ISSN : | 0195-6698 |
DOI | 10.1016/j.ejc.2011.10.009 |