@techreport{oai:kwansei.repo.nii.ac.jp:00026543,
 author = {藤原　, 憲二 and Fujiwara, Kenji},
 issue = {174},
 month = {Feb},
 title = {The Effects of Entry under the Coexistence of Oligopolistic and Monopolistic Competition},
 year = {2018}
}