著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) CECHELLA Cristiano and SILVA Joaquim Ramos and DENTINHO Tomaz Ponce,Explaining Trade and FDI Relationships in a Gravitational Model,地域学研究,02876256,日本地域学会,2009,39,1,41-52,https://cir.nii.ac.jp/crid/1390001204431216256,https://doi.org/10.2457/srs.39.41