ISENSEE, Edmund. Ertragskartierung in der Rübenernte. agricultural-engineering.eu, [S. l.], v. 58, n. 6, p. 386–387, 2003. DOI: 10.15150/lt.2003.1541. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2003-58-6-386-387. Acesso em: 29 märz. 2024.