@inproceedings{ws-msus-99,
  author = {E. Wendlund and H. Schulzrinne},
  title = {{Mobility Support using SIP}},
  booktitle = {Proc. of the 2nd ACM Intern. Workshop on Wireless Mobile
 Multimedia},
  year = {1999},
  pages = {76--82},
  address = {New York, NY, USA},
  publisher = {ACM Press}
}