Indee, T., and J. Pitaksringkarn. “The Analysis of Combination Toll Collection System by Using Traffic Micro Simulation Modeling : Case Study of Dindang Expressway Toll Plaza”. Engineering and Technology Horizons, vol. 38, no. 1, Feb. 2021, pp. 1-14, https://ph01.tci-thaijo.org/index.php/lej/article/view/243399.