Lytvynenko, Anatoliy, Viktor Sarancha, and Viktoriia Shabunina. “MAN Trolleybuses in Ukraine (1939–1951): A History, Technical Characteristics, Features of Operation”. History of science and technology 11, no. 2 (December 12, 2021): 411-436. Accessed March 29, 2024. https://www.hst-journal.com/index.php/hst/article/view/493.