%0 Journal Article
%A Drášil, Milan
%A Novotný, Miroslav
%T A characterization of harmonic languages
%J Archivum mathematicum
%D 1991
%P 7-14
%V 27
%N 1-2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_1991__27_1-2_a1/
%G en
%F ARM_1991__27_1-2_a1