%0 Journal Article
%A A. E. Trubacheva
%T On Optimality of the Flat Proportional Tax Rate in a~Two-Level Economic System
%J Sibirskij žurnal industrialʹnoj matematiki
%D 2009
%P 137-151
%V 12
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SJIM_2009_12_4_a12/
%G ru
%F SJIM_2009_12_4_a12