@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/