Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Herbert Ruefer and Matthias S. Goepfert and Alwin E. Goetz,Surveillance of patients after open heart surgery by Mahalanobis-Taguchi-System (MTS),品質工学研究発表大会論文集 = QEF,21897913,東京 : 品質工学フォーラム,2009,17,,254-257,https://cir.nii.ac.jp/crid/1521699231078272768,