Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ICHIHASHI Masaru and 藤井 秀道,A comparative analysis of Japanese firm productivity : Solow residual and Malmquist productivity index,Chinese Business Review 8(6),,,2009,,,26-36,https://cir.nii.ac.jp/crid/1010282257430135812,