BOEGE, Helmbrecht. Gute Gestaltung im Rheinland. agricultural engineering.eu, [S. l.], v. 58, n. 2, p. 86–87, 2003. DOI: 10.15150/lt.2003.1402. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2003-58-2-086-087. Acesso em: 8 mai. 2024.