Yonas, N. ., and E. . Adugna. “Towards SSL Based Led Luminaires: Policy Frameworks and Global Best Benchmark Practices Ethiopia Needs to Explore and Adopt”. Zede Journal of Ethiopian Engineers and Architects, vol. 39, Feb. 2023, pp. 57-69, http://ejol.aau.edu.et/index.php/ZEDE/article/view/6553.