@article{weko_11281_1,
   author	 = "Kojiro,Taguchi and Makoto,Takizawa",
   title	 = "Group Communication Protocol for Hierarchical Group",
   journal	 = "情報処理学会論文誌",
   year 	 = "2003",
   volume	 = "44",
   number	 = "3",
   pages	 = "674--681",
   month	 = "mar"
}