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) Takehiko Arai and Tatsuaki Okada and Yukio Yamamoto,Sulfur abundance of asteroid 25143 Itokawa observed by X-ray fluorescence spectrometer onboard Hayabusa,"EPS : Earth, Planets and Space",13438832,Tokyo : Terra Scientific Pub. Co,2008,60,1,21-31,https://cir.nii.ac.jp/crid/1523106604761449600,