@techreport{weko_39754_1,
   author	 = "佐藤,敬",
   title	 = "ソフトシステム方法論（SSM）",
   year 	 = "1993",
   institution	 = "東京工科大学工学部情報工学科",
   number	 = "90(1993-IS-046)",
   month	 = "oct"
}