%0 Journal Article
%A V. L. Selivanov
%T Refining the polynomial hierarchy
%J Algebra i logika
%D 1999
%P 456-475
%V 38
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1999_38_4_a4/
%G ru
%F AL_1999_38_4_a4