ORDOLFF, Dieter. Farbparameter zur Bewertung der Eutersauberkeit. agricultural-engineering.eu, [S. l.], v. 57, n. 6, p. 328–329, 2002. DOI: 10.15150/lt.2002.1673. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/2002-57-6-328-329. Acesso em: 29 märz. 2024.