@article{weko_12688_1,
   author	 = "Koji,Eguchi and Hidetaka,Ito and Akira,Kumamoto and Yakichi,Kanata",
   title	 = "Adaptive Query Expansion Based on Clustering Search Results",
   journal	 = "情報処理学会論文誌",
   year 	 = "1999",
   volume	 = "40",
   number	 = "5",
   pages	 = "2439--2449",
   month	 = "may"
}