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2. Detection of certain hop oil constituents in brewing products;Likens;Am. Soc. Brew. Chem., Proc.,1964
3. A Study of the volatile oxygenated constituents in different hop varieties;Buttery;Am. Soc. Brew. Chem., Proc.,1965
4. Odour intensities of hop oil components;Guadagni;J. Sci. Fd. Agric.,1966
5. Identification of the varietal origin of hop extracts;Likens;Am. Soc. Brew. Chem., Proc.,1965