@article{MASLO_1988_38_1_a2,
     author = {Zelinka, Bohdan},
     title = {The distance between various orientations of a graph},
     journal = {Mathematica slovaca},
     pages = {19--25},
     year = {1988},
     volume = {38},
     number = {1},
     mrnumber = {945076},
     zbl = {0644.05024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1988_38_1_a2/}
}