ALT, Norbert. Technische Regelwerke in der Europäischen Union. agricultural engineering.eu, [S. l.], v. 52, n. 5, p. 256–257, 1997. DOI: 10.15150/lt.1997.2511. Disponível em: http://195.37.233.11/landtechnik/article/view/1997-52-5-256-257. Acesso em: 6 mai. 2024.