JESSEN, Sönke; KEUPER, Gerhard. Doppeltwirkende Hubwerke an Traktoren. agricultural engineering.eu, [S. l.], v. 58, n. 1, p. 22–23, 2003. DOI: 10.15150/lt.2003.1380. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2003-58-1-022-023. Acesso em: 6 mai. 2024.