@inproceedings{weko_120485_1,
   author	 = "塚田,晴史 and 杉村,利明",
   title	 = "複数のクラスに所属するオブジェクト",
   booktitle	 = "全国大会講演論文集",
   year 	 = "1991",
   volume	 = "第42回",
   number	 = "ソフトウェア",
   pages	 = "79--80",
   month	 = "feb"
}