P. . Saengsikhiao, J. . Taweekun, K. . Maliwan, S. . Sae-ung, and T. . Theppaya, “Improving Energy Efficiency in the Supermarket by Retrofitting Low E Glass Doors for Open Refrigerated”, J. Adv. Res. App. Sc. Eng. Tech., vol. 20, no. 1, pp. 11–17, Dec. 2020.