@article{08xw-tvt,
    author = {Yi Xu and Wenye Wang},
    title = {{Topology Stability Analysis and its Application in Hierarchical Mobile Ad Hoc Networks}},
    journal ={o appear in  IEEE Transactions on Vehicular Technology},
    volume = "",
    number ="", 
    pages = {},
    month={June},
    YEAR = "2008" }
    OPTNOTE = clustering, stability