Details about Ryoma Kitamura

Access statistics for papers by Ryoma Kitamura.

Last updated 2026-10-16. Update your information in the RePEc Author Service.

Short-id: pki341

Working Papers

2023

1. Effects of Exchange Rate Volatility on Behaviors of Affliate Firms in a Foreign Oligopoly under the Revision of Supply Chains
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2021

2. How Do the Relative Superiority of a High-quality Good and Cost Inefficiency between Firms Affect Product Lines in Multiproduct Firms?
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2020

3. Effects of Changes in Exchange Rate Volatility on Short-run Equilibrium in International Oligopoly
   Discussion Paper Series, School of Economics, Kwansei Gakuin University
4. On a Stackelberg leader's incentive to invite entry into horizontally differentiated oligopolies with network externalities: A reexamination
   Discussion Paper Series, School of Economics, Kwansei Gakuin University View citations (1)

2019

5. Production Substitution of Goods Within and Between Firms in a Multiproduct Duopoly
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2018

6. Product Line Strategy within a Vertically Differentiated Duopoly under Non-negativity Outputs Constraints
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2016

7. Corrigendum to "Product Line Strategy within a Vertically Differentiated Duopoly" [Econom Lett.137 (2015) 114-117]
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2015

8. Cost Reduction can Decrease Pro t and Welfare in a Monopoly
   Discussion Paper Series, School of Economics, Kwansei Gakuin University
9. Product Line Strategy in a Vertically Differentiated Duopoly
   Discussion Paper Series, School of Economics, Kwansei Gakuin University

2014

10. Cannibalization may Allow a Cost-inefficient Firm to Earn more than a Cost-effcient Firm in a Duopoly with Two Vertically Differentiated Goods
    Discussion Paper Series, School of Economics, Kwansei Gakuin University View citations (2)
11. Cannibalization within the Single Vertically Di¤erentiated Duopoly
    Discussion Paper Series, School of Economics, Kwansei Gakuin University View citations (2)
12. Network externalities between carriers or machines:How they work in the smartphone industry
    Discussion Paper Series, School of Economics, Kwansei Gakuin University
13. Strategic Choice on Product Line in Vertically Differentiated Duopoly
    Discussion Paper Series, School of Economics, Kwansei Gakuin University View citations (1)

2013

14. A trade and domestic tax reform in imperfectly competitive markets
    Discussion Paper Series, School of Economics, Kwansei Gakuin University
    See also Journal Article A trade and domestic tax reform in imperfectly competitive markets, The Journal of International Trade & Economic Development, Taylor & Francis Journals (2014) (2014)
15. The Economics of Cannibalization: A Duopoly in which Firms Supply Two Vertically Differentiated Products
    Discussion Paper Series, School of Economics, Kwansei Gakuin University View citations (9)

2012

16. A Tariff-Tax Reform under Oligopoly and Free Entry
    Discussion Paper Series, School of Economics, Kwansei Gakuin University

Journal Articles

2023

1. The choice of network compatibility in two-sided markets
   Applied Economics Letters, 2023, 30, (9), 1248-1252

2015

2. Product line strategy within a vertically differentiated duopoly
   Economics Letters, 2015, 137, (C), 114-117 View citations (2)

2014

3. A trade and domestic tax reform in imperfectly competitive markets
   The Journal of International Trade & Economic Development, 2014, 23, (6), 785-795
   See also Working Paper A trade and domestic tax reform in imperfectly competitive markets, Discussion Paper Series (2013) (2013)