著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Erlander, Sven",Optimal spatial interaction and the gravity model,,Springer-Verlag,1980,Lecture notes in economics and mathematical systems,,"3540097295,0387097295",,https://cir.nii.ac.jp/crid/1130000797186114048