@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042416,
 author = {Ago, Takanori and Isono, Ikumo and Tabuchi, Takatoshi},
 month = {May},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Locational Disadvantage and Losses from Trade : Three Regions in Economic Geography},
 year = {2003}
}