SOURELL, Heinz. Präziser beregnen - Stand der Technik. agricultural engineering.eu, [S. l.], v. 61, n. 4, p. 200–201, 2006. DOI: 10.15150/lt.2006.1098. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2006-61-4-200-201. Acesso em: 29 apr. 2024.