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@article{MAN_1993__296_4_165073, author = {Mau-Hsiang Shih and Shyh-Nan Lee}, title = {Combinatorial formulae for multiple set-valued labellings.}, journal = {Mathematische Annalen}, pages = {35--62}, publisher = {mathdoc}, volume = {296}, number = {4}, year = {1993}, zbl = {0791.05007}, url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165073/} }
Mau-Hsiang Shih; Shyh-Nan Lee. Combinatorial formulae for multiple set-valued labellings.. Mathematische Annalen, Tome 296 (1993) no. 4, pp. 35-62. http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165073/