EHLERT, Detlef. Zweiebenen-Schneidwerk für die Hanfernte. agricultural engineering.eu, [S. l.], v. 52, n. 1, p. 24–25, 1997. DOI: 10.15150/lt.1997.2579. Disponível em: http://195.37.233.11/landtechnik/article/view/1997-52-1-024-025. Acesso em: 3 mai. 2024.