Biendl, Martin. “New International Calibration Standard (ICE-3) for HPLC Analysis of α-and β-Acids: Submitted on Behalf of the International Hop Standards Committee”. BrewingScience, vol. 63, no. 5/6, June 2010, pp. 92-93, https://brewingscience.de/index.php/brewingscience/article/view/455.