@article{GDZPPN002035928, title = {2-3 graphs which have Vizing's adjacency property.}, journal = {Aequationes mathematicae}, volume = {30}, year = {1986}, pages = {34-36}, zbl = {0616.05036}, url = {http://dml.mathdoc.fr/item/GDZPPN002035928} }
Winter, P.A.; Swart, Henda C. 2-3 graphs which have Vizing's adjacency property.. Aequationes mathematicae, Tome 30 (1986) pp. 34-36. http://gdmltest.u-ga.fr/item/GDZPPN002035928/