%0 Journal Article %A Fabian, Václav %T Structural unambiguity of formal languages %J Czechoslovak Mathematical Journal %D 1964 %P 394-430 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1964.100629/ %R 10.21136/CMJ.1964.100629 %G en %F 10_21136_CMJ_1964_100629