FREIMANN, Rüdiger. Gerät steuert Traktor. agricultural engineering.eu, [S. l.], v. 58, n. 3, p. 166–166, 2003. DOI: 10.15150/lt.2003.1467. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2003-58-3-166-166. Acesso em: 29 apr. 2024.