<Working Papers>

"Institutional investor cliques and their voice in Japan : A fact finding" (co-authored with Ryosuke Fujitani and Kiyonori Iwata), Working paper, No. 253, Management Innovation Research Center, Hitotsubashi Institute for Advanced Study, Hitotsubashi University, 2024 (Downloadable).

"The Impact of Mature Firms’ R&D Investment on Dividend Policy: Evidence from Japanese Firms" (co-authored with Kenichi Nagasawa), Working Paper, 2023 (downloadable from SSRN).

"R&D Investment and Pre-Committed Payouts: An Empirical Analysis Using the R&D Investment-Incentivizing Tax Reform as a Natural Experiment" (co-authored with Kenichi Nagasawa), Working Paper, Hitotsubashi University, 2020 (Downloadable from SSRN).

「人材活用と企業価値について」（齋藤玲と共著）、ワーキング・ペーパー、2018年．（PPT）

"R&D Investments and Dividend Policies: Reputation or Flexibility?" (co-authored with K. Nagasawa), Working Paper, Hitotsubashi University, 2016 (Downloadbale from SSRN).

"The Long-Term Stability of Corporate Capital Structure: Evidence from Japanese Firms" (co-authored with T. Mikabe and M. Noma), Working Paper, Hitotsubashi University, 2016 (Downloadbale from SSRN).