Nešpor, J., V. Hanko, M. Karabín, L. Jelínek, and P. Dostálek. “Prenylated Flavonoids As Valuable Biologically Active Compounds from Hops”. KVASNY PRUMYSL, vol. 63, no. 4, Aug. 2017, pp. 164–172, doi:10.18832/kp201719.