%0 Journal Article
%A Yu. L. Ershov
%T Letter to the editors: ``Forcing in admissible sets''               [Algebra and Logic {\bf 29} (1990), no.~6, 424--430;   MR1159138]
%J Algebra i logika
%D 1993
%P 222-223
%V 32
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1993_32_2_a7/
%G ru
%F AL_1993_32_2_a7