@article{AUCMP_1991__32_2_a6,
     author = {Tuza, Zs.},
     title = {Graph coloring problems with applications in algebraic logic},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {55--60},
     publisher = {mathdoc},
     volume = {32},
     number = {2},
     year = {1991},
     mrnumber = {1146767},
     zbl = {0753.05037},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1991__32_2_a6/}
}