%0 Journal Article %A Holá, Ľ. %T On relations approximated by continuous functions %J Acta Universitatis Carolinae. Mathematica et Physica %D 1987 %P 67-72 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUCMP_1987__28_2_a9/ %G en %F AUCMP_1987__28_2_a9