%0 Journal Article
%A Nguyen, Viet Hung
%T Approximation algorithms for metric tree cover and generalized tour and tree covers
%J RAIRO. Operations Research
%D 2007
%P 305-315
%V 41
%N 3
%I EDP-Sciences
%U https://www.numdam.org/articles/10.1051/ro:2007025/
%R 10.1051/ro:2007025
%G en
%F RO_2007__41_3_305_0