%0 Journal Article %A R. V. Freivald %T Two-way finite probabilistic automata and Turing machines with bounded tape complexity %J Doklady Akademii Nauk %D 1981 %P 1326-1329 %V 256 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_256_6_a10/ %G ru %F DAN_1981_256_6_a10