The edge chromatic number of a directed/mixed multigraph. - Leonid S. Melnikov; Vadym G. Vizing (J. Graph Theory, 1999)

On connected list colorings of graphs. - Vadym G. Vizing (Discret. Appl. Math., 2001)

Incidentor coloring of weighted multigraphs. - Vadym G. Vizing; Artem V. Pyatkin (Electron. Notes Discret. Math., 2006)