HERRMANN, Klaus. Meilensteine der Landtechnik. agricultural engineering.eu, [S. l.], v. 56, n. 2, p. 108–109, 2001. DOI: 10.15150/lt.2001.1727. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2001-56-2-108-109. Acesso em: 3 mai. 2024.