%0 Journal Article %A Woryna, Adam %T Representations of a free group of rank two by time-varying Mealy automata %J Discussiones Mathematicae. General Algebra and Applications %D 2005 %P 119-134 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2005_25_1_a5/ %G en %F DMGAA_2005_25_1_a5