%0 Journal Article
%A Yu. M. Vazhenin
%T The elementary definability and elementary characterizability of classes of reflexive graphs
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1972
%P 3-11
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1972_7_a0/
%G ru
%F IVM_1972_7_a0