Transportation price, product differentiation, and R&D in an oligopoly

• Daishoku Kanehara ,

  Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Software, Validation, Writing – original draft, Writing – review & editing

  * E-mail: kanehara053@toyo.jp

  Affiliation Faculty of Economics, Toyo University, Tokyo, Japan

  https://orcid.org/0000-0001-6749-6862

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• Keita Kamei

  Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Validation, Writing – original draft, Writing – review & editing

  Affiliation Department of Economics, Seinan Gakuin University, Fukuoka, Japan

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