KRAWCZYK, Paweł, Artur KOPCZYŃSKI, and Jakub LASOCKI. “Energy Efficiency of an LPG-Powered Extended-Range Electric Vehicle”. Engineering Transactions 73, no. 3 (September 24, 2025): 421–440. Accessed December 5, 2025. https://et.ippt.pan.pl/index.php/et/article/view/3490.