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)
LUDWIG R. K.,"ISOPLOT a plotting and regression program for radiogenic-isotope data, Version 2.57","U. S. Geol. Surv., Open File Rept.",,,1992,40,,,https://cir.nii.ac.jp/crid/1574231874427901952,