HERRMANN, Klaus. Meilensteine der Landtechnik. agricultural engineering.eu, [S. l.], v. 53, n. 2, p. 106–107, 1998. DOI: 10.15150/lt.1998.2444. Disponível em: http://195.37.233.11/landtechnik/article/view/1998-53-2-106-107. Acesso em: 6 mai. 2024.