%0 Journal Article
%A A. O. Slisenko
%T A~property of recursively enumerable sets containing ``hardly deducible'' formulas
%J Zapiski Nauchnykh Seminarov POMI
%D 1971
%P 200-207
%V 20
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1971_20_a18/
%G ru
%F ZNSL_1971_20_a18