Hagen, W., and H. Schwarz. “Determination of Fermentability (Final Attenuation) of Wort: Submitted on Behalf of the Analysis Committee of the European Brewery Convention”. BrewingScience 52, no. 5/6 (June 30, 1999): 94–96. Accessed May 31, 2026. https://brewingscience.de/index.php/brewingscience/article/view/685.