%0 Journal Article
%A D. R. Hirschfeldt
%A B. Khoussainov
%T Finitely presented expansions of computably enumerable semigroups
%J Algebra i logika
%D 2012
%P 652-667
%V 51
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2012_51_5_a5/
%G ru
%F AL_2012_51_5_a5