Sayan Phokate และ Apiwat Boonkhuang. (2022) Estimation of Ultraviolet Radiation Intensity under Cloudless Sky of Thailand. <i>Science Technology and Engineering Journal (STEJ)</i>, <i>8</i>(2), 58-66.Sayan Phokate และ Apiwat Boonkhuang. "Estimation of Ultraviolet Radiation Intensity under Cloudless Sky of Thailand". Science Technology and Engineering Journal (STEJ) 8 (2022):58-66.Sayan Phokate และ Apiwat Boonkhuang. Estimation of Ultraviolet Radiation Intensity under Cloudless Sky of Thailand. Mahasarakham University:ม.ป.ท. 2022.