%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 03 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/AUCMP_1962__3_1_a5/ %G en %F AUCMP_1962__3_1_a5