Christian, Manuel, Vladimír Ilberg, Jean Titze, Albrecht Friess, Fritz Jacob, and Harun Parlar. 2009. “Gushing Laboratory Tests As Successful Methods for Obtaining New Cognitions on Gushing”. BrewingScience 62 (5/6): 83-89. https://brewingscience.de/index.php/brewingscience/article/view/470.