@article{05188499, title = {Combinatorial identities by way of Wilf's multigraph model.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2006}, year = {2006}, doi = {10.1155/IJMMS/2006/96327}, zbl = {1122.05007}, language = {en}, url = {http://dml.mathdoc.fr/item/05188499} }
Friedman, Theresa L.; Klingsberg, Paul. Combinatorial identities by way of Wilf's multigraph model.. International Journal of Mathematics and Mathematical Sciences, Tome 2006 (2006) . doi : 10.1155/IJMMS/2006/96327. http://gdmltest.u-ga.fr/item/05188499/