@article{weko_75446_1,
   author	 = "Hiroyuki,Sato and Akira,Kubo",
   title	 = "Graded Trust of Certificates and Its Management with Extended Path Validation",
   journal	 = "Journal of information processing",
   year 	 = "2011",
   volume	 = "19",
   number	 = "",
   pages	 = "263--273",
   month	 = "jul"
}