@article{oai:ncu.repo.nii.ac.jp:00000458,
 author = {Matsubara, Kiyoshi},
 issue = {1},
 journal = {オイコノミカ},
 month = {Sep},
 note = {In this study, we estimated the effects of foreign imports on the technological changes that take place within U.S. manufacturing firms. We constructed},
 pages = {23--36},
 title = {Import Penetration and Technological Changes in U.S. Manufacturing Industries},
 volume = {41},
 year = {2004}
}