Kralj, Dragica, Milica Kač, Marta Dolinar, Milan Žolnir, and Samo Kralj. 1998. “Marker-Assisted Hop (Humulus Lupulus L.) Breeding: Biochemical Markers for Resistance to Downy Mildew (Pseudoperonospora Humuli Miyabe Et Takah) and Hop Damson Aphid (Phorodon Humuli Schrank)”. BrewingScience 51 (7/8): 111-19. https://brewingscience.de/index.php/brewingscience/article/view/706.