Reglitz, Klaas, et al. “On the Behavior of the Important Hop Odorant 4-Mercapto-4-Methylpentan-2-One (4MMP) During Dry Hopping and During Storage of Dry Hopped Beer”. BrewingScience, vol. 71, no. 11/12, Dec. 2018, pp. 96-99, https://doi.org/10.23763/BrSc18-13steinhaus.