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) DLUGOKENCKY E. J.,Conversion of NOAA atmospheric dry air CH_4 mole fractions to a gravimetrically prepared standard scale,J. Geophys. Res.,,,2005,110,,D18306,https://cir.nii.ac.jp/crid/1572543025752988032,