1. Humulus lupulus - a story that begs to be told. A review;Almaguer;Journal of the Institute of Brewing,2014
2. ASBC Methods of Analysis, online. Hops Method 14. α-Acids and β-Acids in Hops and Hop Extracts by HPLC (International Method). Approved 1990, rev. 2008. American Society of Brewing Chemists, St. Paul, MN, U.S.A. doi: 10.1094/ASBCMethod-Hops14.
3. ASBC Methods of Analysis, online. Hops Method 4. Moisture. Approved 1958, rev. 2008. American Society of Brewing Chemists, St. Paul, MN, U.S.A. doi: 10.1094/ASBCMethod-Hops4.
4. ASBC Methods of Analysis, online. Hops Method 13. Total Essential Oils in Hops and Hop Pellets by Steam Distillation. Approved 1988, rev. 2008. American Society of Brewing Chemists, St. Paul, MN, U.S.A. doi: 10.1094/ASBCMethod-Hops13.
5. ASBC Methods of Analysis, online. Hops Method 17. Hop Essential Oils by Capillary Gas Chromatography-Flame Ionization Detection. Approved 2004. American Society of Brewing Chemists, St. Paul, MN, U.S.A. doi: 10.1094/ASBCMethod-Hops17.