%0 Journal Article
%A Yu. L. Ershov
%T Relative regular closure and $\pi$-normalizations
%J Algebra i logika
%D 1992
%P 592-623
%V 31
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1992_31_6_a1/
%G ru
%F AL_1992_31_6_a1