Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
"Ōtsu, Taisuke and Nishihata, Masaya",Conditional GMM estimation for gravity models,,,Keio Economic Observatory Sangyo Kenkyujo,2020-04-29,,,,https://cir.nii.ac.jp/crid/1870021791620503552,