著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Akahira, Takeo",Tables of e[-x]/x and ∫[∞][x]e[-u]/u du from x=20 to x=50,,理化學研究所,1929,Scientific papers of the Institute of Physical and Chemical Research,,,,https://cir.nii.ac.jp/crid/1130282272192705536