- Identifying the effect of labor CSR programs on production and inefficiency (with Eri Nakamura and Katsuhiko Kokubu)
- Extended Producer Responsibility and Recycling: A qualitative analysis of Japan and Belgium (with Masanobu Ishikawa)
- The impact of recycling fee on waste generation: A quantitative analysis from Japan (with Masanobu Ishikawa)
- The impact of number of sorted collections on recycling rates: An empirical comparison of Japan and Belgium (with Masanobu Ishikawa)
- Time for Environmental Regulation to pave the way for Eco-Innovation: An illustration with the Dieselgate
- Financial Development & Green Investment: An empirical investigation of OECD countries (with Mahmood Rhaman and Zakaria Zoundi)