@conference{MP08a,
  author = "M. Mhalla, S. Perdrix",
  booktitle = "<A target="_blank" href="http://www.ru.is/icalp08/index.html"><B>ICALP'08</B></A>, the 35th International Colloquium on Automata, Languages and Programming",
  title = "Finding Optimal Flows Efficiently",
  url = "http://arxiv.org/abs/0709.2670",
  year = "2008",
}