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@article{DA_2005_12_4_a1, author = {V. G. Vizing}, title = {On the $(p,q)$-coloring of incidentors of an undirected multigraph}, journal = {Diskretnyj analiz i issledovanie operacij}, pages = {23--39}, publisher = {mathdoc}, volume = {12}, number = {4}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DA_2005_12_4_a1/} }
V. G. Vizing. On the $(p,q)$-coloring of incidentors of an undirected multigraph. Diskretnyj analiz i issledovanie operacij, Tome 12 (2005) no. 4, pp. 23-39. http://geodesic.mathdoc.fr/item/DA_2005_12_4_a1/