@conference{WWW2013,
  title = "On the Evolution of the Internet Economic Ecosystem",
  author = "Richard T.B. Ma, John Chi Shing Lui, Vishal Misra",
  year = "2013",
  month = "may",
  booktitle = "Proceedings of the 22nd International World Wide Web Conference (WWW 2013)",
  address = "Rio de Janeiro, Brazil",
}