%V 5 %P 1-20 %L acta12301 %A Ăsik ZoltĂĄn %K SzĂĄmĂtĂĄstechnika, Kibernetika %O Bibliogr.: 20. p. %D 1980 %N 1 %T Decidability results concerning tree transducers I %C Szeged %J Acta cybernetica