HERRMANN, Klaus. Meilensteine der Landtechnik. agricultural engineering.eu, [S. l.], v. 54, n. 2, p. 116–117, 1999. DOI: 10.15150/lt.1999.2310. Disponível em: http://195.37.233.11/landtechnik/article/view/1999-54-2-116-117. Acesso em: 5 mai. 2024.