Gatica-Arias, A., et al. “The Transcription Factor at Regulates the Expression of Flavonoid Biosynthesis Genes in Transgenic Hop (Humulus Lupulus L.)”. BrewingScience, vol. 65, no. 7/8, Aug. 2012, pp. 103-11, https://brewingscience.de/index.php/brewingscience/article/view/396.