%0 Journal Article %A N. A. Pankrat'ev %T The language of Turing machines from the point of view of optimality %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1988 %P 66-68 %N 5 %U http://geodesic.mathdoc.fr/item/VMUMM_1988_5_a17/ %G ru %F VMUMM_1988_5_a17