%0 Journal Article
%A M. I. Kratko
%T On a certain class of Post calculi
%J Doklady Akademii Nauk
%D 1965
%P 994-995
%V 165
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1965_165_5_a3/
%G ru
%F DAN_1965_165_5_a3