%0 Journal Article %A MlĨek, Josef %T End-extensions of countable structures and the induction schema %J Commentationes Mathematicae Universitatis Carolinae %D 1978 %P 291-308 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1978__19_2_a5/ %G en %F CMUC_1978__19_2_a5