23. Masahiko Hattori and Yasuhito Tanaka (2022) “Dynamic analysis of R&D in an oligopoly under general demand and cost functions”, OPSEARCH, Springer, Vol.59, pp.694-710, Scimago Journal Rank.
22. Masahiko Hattori and Yasuhito Tanaka (2021) “Advertising in an oligopoly with differentiated goods under general demand and cost functions”, Manchester School, John Wiley, Vol.89(6), pp.619-639, Scimago Journal Rank.
21. Masahiko Hattori and Yasuhito Tanaka (2021) “License and entry strategies for an outside innovator in Stackelberg duopoly with royalty and fixed fee under vertical differentiation”, International Journal of Economic Theory, John Wiley, Vol.17(3), pp.234-257, Scimago Journal Rank.
20. Masahiko Hattori and Yasuhito Tanaka (2020) “Entry of Innovator and License in Oligopoly”, Journal of Industry, Competition and Trade, Springer, Vol.20(4), pp.709-731, Scimago Journal Rank.
19. Masahiko Hattori and Yasuhito Tanaka (2020) “Divisibility of Labor Supply and Involuntary Unemployment: A Perfect Competition Model ”, Journal of Economics and Management, Feng-Chia University (逢甲大学), Taiwan, Vol.16(2), pp.193-207.
18. Masahiko Hattori and Yasuhito Tanaka (2020) “License fees in oligopoly when outside innovator can enter the market: two-step auction”, International Game Theory Review, World Scientific, Vol.22(3), pp.1-15, Scimago Journal Rank.
17. Masahiko Hattori and Yasuhito Tanaka (2020) “A differential game analysis of free entry oligopoly with sticky price”, Journal of Economics and Management, Feng-Chia University (逢甲大学), Taiwan, Vol.16(1), pp.1-10.
16. Masahiko Hattori and Yasuhito Tanaka (2019) “General analysis of dynamic oligopoly with sticky price ”, Economics Bulletin, Vanderbilt University, Vol.39(4), pp.2990-2998, Scimago Journal Rank.
15. Masahiko Hattori and Yasuhito Tanaka (2018) “License and entry strategies for an outside innovator in Stackelberg duopoly with royalty and fixed fee under vertical differentiation”, Philippine Economic Review, Vol.55(1-2), pp.110-127.
14. Masahiko Hattori and Yasuhito Tanaka (2018) “License and entry strategies for an outside innovator under duopoly with combination of royalty and fixed fee”, Journal of Industry, Competition and Trade, Springer, Vol.18(4), pp.485-502, Scimago Journal Rank.
13. Masahiko Hattori and Yasuhito Tanaka (2018) “Negative Royalty in Duopoly and Definition of License Fee: General Demand and Cost Functions”, International Journal of Business and Economics, Feng-Chia University (逢甲大学), Taiwan, Vol.17(2), pp.163-178.
12. Masahiko Hattori and Yasuhito Tanaka (2018 ) “License and Entry Strategies for an Outside Innovator Under Duopoly”, Italian Economic Journal, Springer, Vol.4(1), pp.135-152, Scimago Journal Rank.
11. Masahiko Hattori and Yasuhito Tanaka (2018) “Vertical differentiation in oligopoly and license fees when outside innovator can enter the market: Two-step auction”, Metroeconomica, John Wiley, Vol.69(2), pp.347-365, Scimago Journal Rank.
10. Masahiko Hattori and Yasuhito Tanaka (2018) “License and Entry Decisions for a Firm with a Cost Advantage in an International Duopoly under Convex Cost Functions”, Journal of Economics and Management, Feng-Chia University (逢甲大学), Taiwan, Vol.14(1). pp.1-31.
9. Masahiko Hattori and Yasuhito Tanaka (2017) “Competitiveness of firm behavior and public policy for new technology adoption in an oligopoly”, Journal of Industry, Competition and Trade, Springer, Vol.17(2), pp.135-151, Scimago Journal Rank.
8. Masahiko Hattori and Yasuhito Tanaka (2017) “License or Entry in Duopoly with Quality Improving Innovation: Alternative Definitions of License Fee”, Journal of Economics and Management, Feng-Chia University (逢甲大学), Taiwan, Vol.13(1), pp.1-26.
7. Masahiko Hattori and Yasuhito Tanaka (2017) “Competitiveness and subsidy or tax policy for new technology adoption in duopoly”, Global Economic Review, Taylor & Francis, Vol.46(1), pp.18-32, Scimago Journal Rank.
6. Masahiko Hattori and Yasuhito Tanaka (2016) “Subsidy for New Technology Adoption in Duopoly with Differentiated Goods under Absolute and Relative Profit Maximization”,Journal of Economics Library, KSP Journals, Turkey, Vol.3(3), pp.411-428.
5. Masahiko Hattori and Yasuhito Tanaka (2016) “Taxation or subsidization policy for new technology adoption in oligopoly”, International Journal of Business and Economics, Feng-Chia University (逢甲大学), Taiwan, Vol.15(2), pp.161-172.
4. Masahiko Hattori and Yasuhito Tanaka (2016) “License or entry with vertical differentiation in duopoly”, Economics and Business Letters, Oviedo University, Spain, Vol.5(1), pp.17-29, Scimago Journal Rank.
3. Masahiko Hattori and Yasuhito Tanaka (2016) “Subsidizing New Technology Adoption in a Stackelberg Duopoly: Cases of Substitutes and Complements”, Italian Economic Journal, Springer, Vol.2(2), pp.197-215, Scimago Journal Rank.
2. Masahiko Hattori and Yasuhito Tanaka (2015) “Subsidy or tax policy for new technology adoption in duopoly with quadratic and linear cost functions”, Economics Bulletin, Vanderbilt University, Vol.35(2), pp.1423-1433, Scimago Journal Rank.
1. Masahiko Hattori and Yasuhito Tanaka (2014) “Incentive for adoption of new technology in duopoly under absolute and relative profit maximization”, Economics Bulletin, Vanderbilt University, Vol.34(3), pp.2051-2059, Scimago Journal Rank.
2019年11月 "A differential game analysis of R&D in oligopoly under general demand and cost functions ", 服部 昌彦, 田中 靖人, Kwansei Gakuin Univesity IO workshop, 2019年度第7回（関西学院大学）
2019年10月 "Advertising in an Oligopoly: A Differential Game ", 服部 昌彦, 田中 靖人, 日本応用経済学会, 2019年度秋季大 会（東京経済大学）
2018年5月 "Royalty and license fee under oligopoly with or without entry of innovator: Credibility of two-step auction ", 服部 昌彦, 田中 靖人, 日本経済政策学会, 2018年春季大会（同志社大学）
2016年6月 "License or entry with or without license in duopoly ", 服部 昌彦, 田中 靖人, 日本経済学会, 2016年度春季大会（名古屋大学）
2015年8月 "Incentive for adoption of new technology in oligopoly with differentiated goods and subsidization or taxation policy", 服部 昌彦, 田中 靖人, 日本応用経済学会, 2015年度春季大 会（九州産業大学）