HAMMEN, Volker Carsten; EHLERT, Detlef. Online-Ertragsmessung in Kleegras mit dem Pendulum Meter. agricultural engineering.eu, [S. l.], v. 54, n. 3, p. 156–163, 1999. DOI: 10.15150/lt.1999.2259. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1999-54-3-156-163. Acesso em: 30 apr. 2024.