%0 Journal Article %J SIAM Journal on Computing %D 2010 %T Approximation Algorithms for Non-Uniform Buy-at-Bulk Network Design %A Chekuri,C. %A Hajiaghayi, Mohammad T. %A Kortsarz,G. %A Salavatipour,M. R %B SIAM Journal on Computing %V 39 %P 1772 - 1798 %8 2010/// %G eng %N 5