Kazimierz Bieliński, Sławomir Cieślik. “Experimental Study of Higher Harmonics Content in Street Lighting System Current”. Acta Energetica, no. 02 (October 10, 2022): 45–59. Accessed April 21, 2026. https://www.actaenergetica.org/index.php/journal/article/view/374.