@article{cohen-nakibli08,
 author = "Reuven Cohen and Gabi Nakibli",
 title = "On the Computational Complexity and Effectiveness of {N}-hub
          Shortest-Path Routing",
 journal = "{IEEE/ACM} Transactions on Networking",
 volume    = 16,
 number    = 3,
 month     = "June",
 year      =  2008,
 note      = "An earlier version was presented in Infocom'2004"
 }