@techreport{weko_22290_1,
   author	 = "西尾,高典",
   title	 = "有向グラフの階層に基づく対話型応用ソフトウェア仕様記述の一方法",
   year 	 = "1990",
   institution	 = "（株）日立製作所システム開発研究所",
   number	 = "97(1990-SE-076)",
   month	 = "dec"
}