%0 Journal Article
%A L. Yu. Kossovich
%A Yu. N. Radaev
%T Professor Dyuis Danilovich Ivlev (on his 80th birthday)
%J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
%D 2010
%P 69-91
%V 10
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ISU_2010_10_4_a10/
%G ru
%F ISU_2010_10_4_a10