Petelkov, Ivan, Vesela Shopska, Rositsa Denkova-Kostova, Kristina Ivanova, Georgi Kostov, and Velislava Lyubenova. 2021. “Investigation of Fermentation Regimes for the Production of Low-Alcohol and Non-Alcohol Beers”. Periodica Polytechnica Chemical Engineering 65 (2):229-37. https://doi.org/10.3311/PPch.15975.