%0 Journal Article
%A E. B. Katsov
%T The~category property of the theory of polygons
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1987
%P 221
%V 42
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1987_42_3_a12/
%G en
%F RM_1987_42_3_a12