@article{AUCMP_2008__49_1_a4,
     author = {Fla\v{s}ka, V\'aclav and Kepka, Tom\'a\v{s} and Kortelainen, Juha},
     title = {On separating sets of words. {I.}},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {33--51},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {2008},
     mrnumber = {2517936},
     zbl = {1162.68030},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/AUCMP_2008__49_1_a4/}
}