%0 Journal Article
%A A. I. Erzin
%A R. V. Plotnikov
%A Yu. V. Shamardin
%T Some polynomially solvable cases and approximation algorithms for optimal communication tree construction problem
%J Diskretnyj analiz i issledovanie operacij
%D 2013
%P 12-27
%V 20
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DA_2013_20_1_a1/
%G ru
%F DA_2013_20_1_a1