Rettberg, N., Thörner , S., Labus, A. B., & Garbe, L.-A. (2014). Aroma Active Monocarboxylic Acids – Origin and Analytical Characterization in Fresh and Aged Hops. BrewingScience, 67(3/4), 33-47. https://brewingscience.de/index.php/brewingscience/article/view/345