@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042180,
 author = {Nakamura, Tsuyoshi and Ohashi, Hiroshi},
 month = {Aug},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Effects of Re-invention on Industry Growth and Productivity : Evidence from Steel Refining Technology in Japan, 1957-68},
 year = {2011}
}