Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okada Akira,The History and Present State of Game Theory,The History of Economic Thought,1880-3164,The Japanease Society for the History of Economic Thought,2007,49,1,137-154,https://cir.nii.ac.jp/crid/1390001205362424448,https://doi.org/10.11498/jshet2005.49.137