%0 Journal Article
%A Ďuriš, Pavol
%T Two new proof techniques for investigating the computational power of two-way computing devices [Abstract of thesis]
%J Commentationes Mathematicae Universitatis Carolinae
%D 1989
%P 197-198
%V 30
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1989__30_1_a30/
%G en
%F CMUC_1989__30_1_a30