พ้นภัย พ, สืบสาร พ, พรมมี ว. Improved Illumination Model of LED Street Light at Rajamangala University of Technology Lanna, Chiang Rai. RMUTL.Eng.J. [Internet]. 2017 Dec. 1 [cited 2024 Apr. 29];2(2):25-3. Available from: https://ph01.tci-thaijo.org/index.php/RMUTLEngJ/article/view/183567