著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Yuta Umezu and Hidetoshi Matsuoka and Hiroshi Ikeda and Yoshiyuki Ninomiya,Ridge-type regularization method for questionnaire data analysis,Pacific journal of mathematics for industry : PJMI,21886369,Fukuoka : Institute of Mathematics for Industry,2016,8,,51-59,https://cir.nii.ac.jp/crid/1520290885041871744,