Freijee, F. J. M. “Determination of the High Molecular Weight β-Glucan Content of Malt Wort by a Spectrophotometric Method – Determination of the Accuracy, Repeatability and Reproducibility: Submitted on Behalf of the EBC Analysis Committee”. BrewingScience, vol. 59, no. 11/12, Dec. 2005, pp. 27-29, https://brewingscience.de/index.php/brewingscience/article/view/529.