@article{DMGT_2003_23_1_a0,
     author = {Bere\v{z}n\'y, \v{S}tefan and Lacko, Vladim{\'\i}r},
     title = {Balanced problems on graphs with categorization of edges},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {5--21},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2003_23_1_a0/}
}