Laiwarin, Pradthana, Sumaman Buntoung, and Serm Janjai. “Development of empirical models for calculating global and diffuse erythemal weighted solar ultraviolet radiation under clear sky conditions in Thailand”. Science, Engineering and Health Studies 18 (October 28, 2024): 24020003. accessed September 11, 2026. https://li01.tci-thaijo.org/index.php/sehs/article/view/258233.