Japan. Gakujutsu Kokusaikyoku

• Kenkyūsha kenkyū kadai sōran 1990
• Kenkyūsha kenkyū kadai sōran 1990
• Daigaku to sangyōkai to no kenkyū kyōryoku
• Gakujutsu kenkyū ronbunsū no kokusai hikaku chōsa
• Heisei 12-nendo tokubetsu suishin kenkyū (shinki kōfu kadai)
• Heisei 3-nen Yunesuko kankei jimu no hōkoku
• Kenkyūsha kenkyū kadai sōran
• Waga kuni no gakujutsu kenkyū