@article{weko_10836_1,
   author	 = "Shigeki,Kitazawa and Masakazu,Soshi and Atsuko,Miyaji",
   title	 = "On Anonymity Metrics for Practical Anonymous Communication Protocols",
   journal	 = "情報処理学会論文誌",
   year 	 = "2004",
   volume	 = "45",
   number	 = "8",
   pages	 = "1887--1897",
   month	 = "aug"
}