W.Y.C. Chen and D.C. Torney,
Equivalence classes of matchings and lattice-square designs,
Discrete Appl. Math. 145 (2005) 349-357.

Cited by

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1. H. Li and D.C. Torney, Enumerations of unlabelled multigraphs, Ars Combin. 75 (2005) 171-188.