HÜGLE, Thomas; SCHWIEGER, Hartwig. Punktgenau breit verteilen. agricultural engineering.eu, [S. l.], v. 53, n. 4, p. 244–245, 1998. DOI: 10.15150/lt.1998.2397. Disponível em: http://195.37.233.11/landtechnik/article/view/1998-53-4-244-245. Acesso em: 5 mai. 2024.