| Article ID: | iaor20102943 |
| Volume: | 37 |
| Issue: | 2 |
| Start Page Number: | 71 |
| End Page Number: | 74 |
| Publication Date: | Mar 2009 |
| Journal: | Operations Research Letters |
| Authors: | Skutella Martin, Salazar Fernanda |
Motivated by a famous open question on the single-source unsplittable minimum cost flow problem, we present a new approximation result for the relaxation of the problem where, for a given number