Yang* Y, Feng Y, Liu L. The Selection Method of Fuzzy Composite Operators Based on the Clear Field. Curr. Appl. Sci. Technol. [internet]. 2018 Mar. 30 [cited 2026 Aug. 27];12(1):39-48. available from: https://li01.tci-thaijo.org/index.php/cast/article/view/136336