Polnik, B., Z. Budzynski, and B. Miedzinski. “Effective Control of a Battery Supplied Mine Locomotive Unit”. Elektronika ir Elektrotechnika 20, no. 3 (March 4, 2014): 39–43. Accessed January 23, 2026. https://eejournal.ktu.lt/index.php/elt/article/view/3319.