HERMANN, Klaus. „Faszination Traktoren“ — Höhepunkte des 15. Hohenheimer Feldtages. agricultural engineering.eu, [S. l.], v. 64, n. 5, p. 367–369, 2009. DOI: 10.15150/lt.2009.697. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2009-64-5-367-369. Acesso em: 3 mai. 2024.