@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042381,
 author = {Mai, Chao-cheng and Shin-Kun, Peng and Tabuchi, Takatoshi},
 month = {Sep},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Economic Geography with Tariff Competition},
 year = {2006}
}