WIDMANN, Bernhard; MAIER, Leonhard; ZEITLER, Eberhard; GAEDE, Wolfgang; RUHE, Friedrich. Bewährungsprobe bestanden. agricultural engineering.eu, [S. l.], v. 52, n. 2, p. 66–67, 1997. DOI: 10.15150/lt.1997.2552. Disponível em: http://195.37.233.11/landtechnik/article/view/1997-52-2-066-067. Acesso em: 9 mai. 2024.