A. CERENAK, D. KRALJ, and B. JAVORNIK, “Compounds of essential oils as markers of hop resistance (Humulus lupulus) to powdery mildew (Podosphaera macularis)”, aas, vol. 93, no. 3, pp. 267–273, Sep. 2009, doi: 10.14720/aas.2009.93.3.15049.