@article{DMGT_1997_17_1_a10,
     author = {Szigeti, Jen\H{o} and Tuza, Zsolt},
     title = {Generalized colorings and avoidable orientations},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {137--145},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_1997_17_1_a10/}
}