Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tadashi Hamano,"On ""convex-concave"" production functions and aggregate production efficiency : an example",東京経大学会誌. 経済学 = The journal of Tokyo Keizai University,13486403,国分寺 : 東京経済大学経済学会,2014,,283,255-258,https://cir.nii.ac.jp/crid/1520853833178123136,