Parinya Chalermsook, Julia Chuzhoy, Alina Ene, Shi Li. Approximation algorithms and hardness of integral concurrent flow. In Howard J. Karloff, Toniann Pitassi, editors, Proceedings of the 44th Symposium on Theory of Computing Conference, STOC 2012, New York, NY, USA, May 19 - 22, 2012. pages 689-708, ACM, 2012. [doi]
Abstract is missing.