%0 Journal Article
%A V. V. Shenmaier
%T An approximation algorithm for the hierarchical median problem
%J Diskretnyj analiz i issledovanie operacij
%D 2008
%P 84-91
%V 15
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DA_2008_15_4_a6/
%G ru
%F DA_2008_15_4_a6