BÖTTGER, Hartmut; LANGNER, Hans-Rainer. Neue Technik zur variablen Spritzmitteldosierung. agricultural engineering.eu, [S. l.], v. 58, n. 3, p. 142–143, 2003. DOI: 10.15150/lt.2003.1458. Disponível em: http://195.37.233.11/landtechnik/article/view/2003-58-3-142-143. Acesso em: 4 mai. 2024.