%0 Journal Article %A Pondělíček, Bedřich %T On compositional and convolutional discrete systems %J Kybernetika %D 1981 %P 277-286 %V 17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1981__17_4_a0/ %G en %F KYB_1981__17_4_a0