KLEINKNECHT, Christoph; MÜLLER, Joachim; KÖLLER, Karlheinz. Fall-Studien. agricultural engineering.eu, [S. l.], v. 53, n. 6, p. 388–389, 1998. DOI: 10.15150/lt.1998.2370. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1998-53-6-388-389. Acesso em: 28 mai. 2024.