%0 Journal Article %A Drbohlav, Karel %T A note on a problem of a ring covered by fields %J Acta Universitatis Carolinae. Mathematica et Physica %D 1962 %P 23-24 %V 3 %N 1 %U http://geodesic.mathdoc.fr/item/AUCMP_1962_3_1_a5/ %G en %F AUCMP_1962_3_1_a5