STUBBE, Lars; BICHMANN, Mathias. Auf Kontaktsuche. agricultural engineering.eu, [S. l.], v. 52, n. 5, p. 260–261, 1997. DOI: 10.15150/lt.1997.2513. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1997-52-5-260-261. Acesso em: 27 apr. 2024.