@article{cohen-nakibly07, 
author = "Reuven Cohen and Gabi Nakibly",
title ="Traffic Engineering Considerations for the Placement of Network Services",
journal =  "IEEE/ACM Transactions on Networking",
volume = 17,
number = 2,
month =  apr,
year =   2009,
Note      = "An earlier version was presented in Infocom'2007"
}