@article{
author = {Chandra Chekuri and  Sanjeev Khanna and  F. Bruce Shepherd},
title = {An O(√n) Approximation and Integrality Gap for Disjoint Paths and Unsplittable Flow},
journal = {Theory of Computing},
year = {2006},
volume = {2},
number = {1},
pages = {137-146},
publisher = {Theory of Computing},
eprint = {toc:v002/a007},
URL = {http://www.theoryofcomputing.org/articles/main/v002/a007},
}