Doboku Kenkyūjo (Japan). Kōzōbutsu Mentenansu Kenkyū Sentā

• Beikoku no saigai taiō, kiki kanri ni kansuru chōsa
• Kisetsu dōrokyō kiso no taishin seinō kanʼi hyōka shuhō ni kansuru kenkyū
• Kisetsu dōrokyō konkurīto shōban no taikyūsei kōjō ni kansuru kenkyū
• Kōkyō kōtanbu no fushoku taisaku ni kansuru kenkyū
• Tekkin konkurīto kōzōbutsu no sekōsei o kōryoshita kōzō saimoku no kentō