%0 Journal Article
%A A. M. Levin
%T One conservative extension of formal mathematic analysis with a~scheme of dependent choice
%J Matematičeskie zametki
%D 1977
%P 61-68
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1977_22_1_a6/
%G ru
%F MZM_1977_22_1_a6