Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SUDA Masaya,A Model of Optimal Spatial Allocation of Branch Offices from the Viewpoint of Communication Cost,Japanese Journal of Human Geography,00187216,The Human Geographical Society of Japan,1994,46,5,515-527,https://cir.nii.ac.jp/crid/1390001205140139136,https://doi.org/10.4200/jjhg1948.46.515