@article{  
   author = {R. Jurdak, P. Baldi, C. Videira Lopes},
   title = {U-MAC: A Proactive and Adaptive UWB Medium Access Control Protocol.},
   journal = {Wireless Communications and Mobile Computing Journal (special Issue on "UWB Communications")},
   volume = {5},
   number = {5},
   pages = {551-566},
   note = {},
   abstract = {},
   keywords = {},
   year = {2005}
}