@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042413,
 author = {Nakamura, Tsuyoshi and Ohashi, Hiroshi},
 month = {Sep},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Technology Adoption, Learning by Doing, and Productivity : A Study of Steel Refining Furnaces},
 year = {2005}
}