@techreport{weko_22294_1,
   author	 = "加藤潤三",
   title	 = "情報システム開発方法の比較",
   year 	 = "1990",
   institution	 = "日本ユニシス（株）システム技術本部",
   number	 = "89(1990-SE-075)",
   month	 = "nov"
}