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) Erling Ringgaard and Thom Wurlitzer,Lead-free piezoceramics based on alkali niobates,Journal of the European Ceramic Society,0955-2219,Elsevier BV,2005-01,25,12,2701-2706,https://cir.nii.ac.jp/crid/1362544420353661568,https://doi.org/10.1016/j.jeurceramsoc.2005.03.126