@inproceedings{com2kar99,
  author = {J. Karvo and S. Aalto},
  title = {Average Signalling Load for Multicast Group Management},
  booktitle = {Proceedings of ITC-16},
  address = {Edinburgh, UK},
  month = {June},
  year = {1999},
  publisher = {Elsevier},
  pages = {509--518},
  url = {http://www.elsevier.com/},
}