HARMS, Jonny; RADAU, Boris; KRÜGER, Eckhard. Bestimmung von Oxalsäure in Malz, Würze und Bier mittels HPLC. BrewingScience, [S. l.], v. 47, n. 11, p. 356–359, 1994. Disponível em: https://brewingscience.de/index.php/brewingscience/article/view/833. Acesso em: 18 oct. 2026.