SPUNEI, E., CSEPEI, A., PIROI, I., PIROI, F. and ROTARU, M. 2022. Study on the importance of upgrading public lighting systems. Studia Universitatis Babeș-Bolyai Engineering. 67, 1 (Nov. 2022), 224–237. DOI:https://doi.org/10.24193/subbeng.2022.1.22.