@ARTICLE{06sw-wcmc,
     AUTHOR = {Jung Kee Song and Wenye Wang},
     TITLE = {{A Simulation Study of IP-Based Vertical Handoff in Wireless Convergent Networks}},
     JOURNAL = {Wireless Communications \& Mobile Computing},
     VOLUME = "6",
     NUMBER = "5",
     PAGES = "629-650",
     MONTH = "August",
     YEAR = "2006"}
     OPTNOTE = mip, mobile IP