Mikyška, A., and M. Jurková. “Analysis and Prognosis of Bitter Acids Content in Czech Hop Varieties - Year 2018 and Long-Term Comparisons and Trends”. KVASNÝ PRŮMYSL, Vol. 65, no. 1, Feb. 2019, pp. 23-31, doi:10.18832/kp2019.65.23.