%0 Journal Article
%A Yu. A. Alpin
%A R. G. Bukharaev
%T A sufficiency test for nonrepresentability of languages in finite-state probabilistic automata
%J Doklady Akademii Nauk
%D 1975
%P 777-780
%V 223
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1975_223_4_a0/
%G ru
%F DAN_1975_223_4_a0