%0 Journal Article
%A V. S. Makarov
%A I. S. Gutsul
%T IX~All-Union conference on geometry
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1989
%V 44
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1989_44_4_a16/
%G ru
%F RM_1989_44_4_a16