«ENERGY-EFFICIENT STREET LIGHTING SYSTEM OF THE CITY OF SHTIP USING SOLAR ENERGY AND LED TECHNOLOGY». ETIMA 1, no. 1 (октябрь 22, 2021): 204–211. просмотрено октябрь 3, 2025. https://js.ugd.edu.mk/index.php/etima/article/view/4510.