@article{imelio-computernetworks,
  author = {Raimo Kantola and Jos{\'e} Costa-Requena and Nicklas Beijar},
  title = {Interoperable routing for IN and IP Telephony},
  journal = {Computer Networks},
  volume = {35},
  year = {2001},
  pages = {597--609},
  month = {April},
  number = {5},
  publisher = {Elsevier},
}