@article{weko_15434_1,
   author	 = "村上,研二 and 相原恒博 and 四反田,秀樹",
   title	 = "デフォルト推論における準拡張世界とその性質",
   journal	 = "情報処理学会論文誌",
   year 	 = "1987",
   volume	 = "28",
   number	 = "12",
   pages	 = "1280--1287",
   month	 = "dec"
}