%0 Journal Article %A Simon, Petr %T An upper bound for countably splitting number %J Acta Universitatis Carolinae. Mathematica et Physica %D 2004 %P 81-82 %V 45 %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/AUCMP_2004__45_2_a9/ %G en %F AUCMP_2004__45_2_a9