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)
George R. Helffrich,"How good are routinely determined focal mechanisms? Empirical statistics based on a comparison of Harvard, USGS and ERI moment tensors",Geophysical Journal International,0956-540X,Oxford University Press (OUP),1997-12,131,3,741-750,https://cir.nii.ac.jp/crid/1362262944459101440,https://doi.org/10.1111/j.1365-246x.1997.tb06609.x