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) 河北 秀世,Nuclear spin temperature and deuterium-to-hydrogen ratio of methane in comet C/2001 Q4 (NEAT),Astrophysical Journal Lette 623(未定)(印刷中),,,2005,,,,https://cir.nii.ac.jp/crid/1010282256797079168,