HEIER, Lars. Das Bonner Abstands-Aufzeichnungs-System. agricultural engineering.eu, [S. l.], v. 56, n. SH1, p. 192–193, 2001. DOI: 10.15150/lt.2001.2136. Disponível em: http://195.37.233.11/landtechnik/article/view/2001-56-SH1-192-193. Acesso em: 3 mai. 2024.