RÁZSÓ, I.; KÉGL, János. LEVER-GEARS FOR TRACTOR-PLOUGHS II. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 9, n. 1, p. 29–41, 1965. Disponível em: https://pp.bme.hu/me/article/view/6247. Acesso em: 17 may. 2024.