@article{weko_59588_1,
   author	 = "Kazuhide,Fukushima and Shinsaku,Kiyomoto and Toshiaki,Tanaka and Kouichi,Sakurai",
   title	 = "Optimization of Group Key Management Structure with a Client Join-Leave Mechanism",
   journal	 = "Journal of Information Processing ",
   year 	 = "2008",
   volume	 = "16",
   number	 = "",
   pages	 = "130--141",
   month	 = "sep"
}