SÁNDOR, I.; JUREK, A. DIE LANDWIRTSCHAFT ALS MOTORGASQUELLE. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 9, n. 4, p. 319–325, 1965. Disponível em: https://pp.bme.hu/me/article/view/6265. Acesso em: 18 may. 2024.