NOACK, Patrick Ole. GPS gestützte automatische Lenksysteme. agricultural-engineering.eu, [S. l.], v. 59, n. 5, p. 256–257, 2004. DOI: 10.15150/lt.2004.1345. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2004-59-5-256-257. Acesso em: 29 märz. 2024.