@article{weko_9431_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	 = "情報処理学会論文誌",
   year 	 = "2008",
   volume	 = "49",
   number	 = "9",
   pages	 = "2963--2974",
   month	 = "sep"
}