%0 Journal Article
%A M. Lomkovskaya
%T Conditional grammars and intermediate classes of languages
%J Doklady Akademii Nauk
%D 1972
%P 781-784
%V 207
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_207_4_a3/
%G ru
%F DAN_1972_207_4_a3