@article{KYB_2005_41_4_a7,
     author = {Bere\v{z}n\'y, \v{S}tefan and Lacko, Vladim{\'\i}r},
     title = {The color-balanced spanning tree problem},
     journal = {Kybernetika},
     pages = {539--546},
     year = {2005},
     volume = {41},
     number = {4},
     mrnumber = {2180362},
     zbl = {1249.05053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2005_41_4_a7/}
}