Sanguanwongthong, P., P. . Taweewattanapaisan, J. Sakdee, and C. Piyachon. “Comparative Study on The Shaping Ability of Three Reciprocating Nickel-Titanium Single File Systems in Curved Root Canals”. Khon Kaen University Dental Journal, vol. 23, no. 3, Dec. 2020, pp. 1-10, https://he01.tci-thaijo.org/index.php/KDJ/article/view/243450.