@article{weko_15005_1,
   author	 = "砂塚,利彦",
   title	 = "品質改善プロセスの行列表現による記述モデル",
   journal	 = "情報処理学会論文誌",
   year 	 = "1990",
   volume	 = "31",
   number	 = "7",
   pages	 = "1--9",
   month	 = "jul"
}