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@article{DA_2000_7_3_a1, author = {V. G. Vizing}, title = {The coloring of the incidentors and vertices of a~directed multigraph}, journal = {Diskretnyj analiz i issledovanie operacij}, pages = {6--16}, publisher = {mathdoc}, volume = {7}, number = {3}, year = {2000}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DA_2000_7_3_a1/} }
V. G. Vizing. The coloring of the incidentors and vertices of a~directed multigraph. Diskretnyj analiz i issledovanie operacij, Tome 7 (2000) no. 3, pp. 6-16. http://geodesic.mathdoc.fr/item/DA_2000_7_3_a1/