%0 Journal Article %A J. Barzdiņš %T The frequency solution of the problem of occurrence in a~recursively enumerable set %J Informatics and Automation %D 1973 %P 52-58 %V 133 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1973_133_a5/ %G ru %F TRSPY_1973_133_a5