@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042554, author = {Nishimura, Kiyohiko G. and Nakajima, Takanobu and Kiyota, Kozo}, month = {May}, note = {application/pdf, 本文フィルはリンク先を参照のこと}, title = {Productivity Convergence at the Firm Level}, year = {2005} }