Kengpol, A., Pichitkarnkar, T., & Elfvengren, K. (2021). A Decision Support System for Consumer Behavior of Chinese In-bound Tourists on Functional Beverage: An Empirical Study during COVID-19 with Thailand Sandbox. Applied Science and Engineering Progress, 15(1). https://doi.org/10.14416/j.asep.2021.09.001