Suranpitak, N. and Tharmmaphornphilas, W. (2012) “Formula selection and scheduling for precast concrete with double layer production”, Engineering and Applied Science Research, 39(2), pp. 181–193. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/4583 (accessed: 31 August 2026).