%0 Journal Article
%A A. S. Morozov
%A M. V. Korovina
%T $\Sigma$-Definability of countable structures over real numbers, complex numbers, and quaternions
%J Algebra i logika
%D 2008
%P 335-363
%V 47
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2008_47_3_a3/
%G ru
%F AL_2008_47_3_a3