1. ACA. (2017). Suichu-isan-hogo no arikata ni tsuite (Guidelines for conservation of underwater ruins) [in Japanese]. Available at: https://www.bunka.go.jp/seisaku/bunkazai/shokai/pdf/r1392246_01.pdf. Accessed 10 Mar 2021.
2. ACA. (2018). Kokuho Juyo Bunkazai Bijutsukogeihin no shuri (Repair of national treasures, important cultural properties and fine arts and crafts) [in Japanese]. Available at: https://www.bunka.go.jp/tokei_hakusho_shuppan/shuppanbutsu/bunkazai_pamphlet/pdf/92723301_01.pdf. Accessed 24 Feb 2021.
3. ACA. (2019). Bunkateki Keikan no hogo no shikumi (Mechanisms for conservation of cultural landscapes) [in Japanese]. Available at: https://www.bunka.go.jp/tokei_hakusho_shuppan/shuppanbutsu/bunkazai_pamphlet/pdf/r1393016_02.pdf. Accessed 27 Feb 2021.
4. ACA. (2020). Toroku Yukei Bunkazai Kenzobutsu seido no goannai (Introduction to the registered tangible cultural properties system) [in Japanese]. Available at: https://www.bunka.go.jp/tokei_hakusho_shuppan/shuppanbutsu/bunkazai_pamphlet/pdf/pamphlet_ja_06_ver02.pdf. Accessed 19 Feb 2021.
5. ACA. (n.d.-a). Introduction to cultural properties. Available at: https://www.bunka.go.jp/english/policy/cultural_properties/introduction/. Accessed 17 Feb 2021.