1. 1) Oita city board of education : Kunishitei Shiseki Motomachi Sekibutsu Hozonseibijigyo Hokokusyo, 2016. (in Japanese) 大分市教育委員会 : 国指定史跡大分元町石仏保存整備事業報告書, 2016
2. 2) H. Derluyn : Salt transport and crystallization in porous limestone: neutron-X-ray imaging and poromechanical modeling, Ph.D thesis, ETH ZURICH, NO. 20673, 2012
3. 3) G. Castellazzi, C. Clla, S. de Miranda, G. Formica, E. Gabrielli, L. Molari and F. Ubertini : A coupled multiphase model for hygrothermal analysis of masonry structures and prediction of stress induced by salt crystallization, Construction and Building Materials, vol. 41, pp717-713, 2013
4. 4) N. Takatori, D. Ogura, S. Wakiya, M. Abuku, K. Kiriyama : Numerical analysis of the influence of hygrothermal variation on salt weathering of a buddha statue carved into a cliff- Study on the conservation of a stone Buddha carved into a cliff at Motomachi PART1-, Journal of Environmental Engineering (Transactions of AIJ), Vol. 82, No. 733, pp. 215-225, 2017.9 (in Japanese) 高取伸光, 小椋大輔, 脇谷草一郎, 安福勝, 桐山京子 : 覆屋内温湿度変動が摩崖仏の塩類風化に及ぼす影響の数値解析, 日本建築学会環境系論文集, 第82巻, 第733号, pp. 215-225, 2017.9
5. 5) D. Ogura, S. Hokoi, T. Hase, K. Okada, M. Abuku, T. Uno : Degradation of Mural Paintings in Mogao Cave 285 in Dunhuang, 2nd Central European Symposium on Building Phisics, pp. 483-490, 2013