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) Hiroyuki Emori and Kiyoshi Nakazawa and Kazunori Iwasaki,Probability distribution of orbital crossing times in a protoplanetary system,"EPS : Earth, Planets and Space",13438832,Tokyo : Terra Scientific Pub. Co,2008,60,6,681-691,https://cir.nii.ac.jp/crid/1523388080047227392,