%0 Journal Article
%A N. T. Kogabaev
%T The class of projective planes is noncomputable
%J Algebra i logika
%D 2008
%P 428-455
%V 47
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2008_47_4_a1/
%G ru
%F AL_2008_47_4_a1