@article{oai:soar-ir.repo.nii.ac.jp:00002642, author = {MURAKAMI, Noriaki}, journal = {信州大学経済学論集}, month = {Mar}, note = {Article, 信州大学経済学論集 64: 27-33(2013)}, pages = {27--33}, title = {Location Problems on the Latiice : three facilities case}, volume = {64}, year = {2013} }