New International Calibration Standards for HPLC Analysis of Iso-alpha-acids and Tetrahydroiso-alpha-acids. BrewingScience, [S. l.], v. 58, n. 11/12, p. 1, 2004. Disponível em: https://brewingscience.de/index.php/brewingscience/article/view/551. Acesso em: 30 may. 2026.