%0 Journal Article %A Gruska, Jozef %T Induction in formal languages. Some properties of reducing transformations and of isolable sets %J Czechoslovak Mathematical Journal %D 1965 %P 406-415 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100683/ %R 10.21136/CMJ.1965.100683 %G en %F 10_21136_CMJ_1965_100683