References
- Alderton, G., Bailey, G. F., Lewis, J. C., and Stitt, F. Anal. Chem. 26. 983 (1954).
- American Society of Brewing Chemists. Report of Subcommittee on Hop Analysis. ASBC, Proc. 1956, pp. 248–260.
- American Society of Brewing Chemists. Report of Subcommittee on Hop Analysis. ASBC, Proc. 1957, pp. 144–160.
- American Society of Brewing Chemists. Report of Subcommittee on Hop Analysis. ASBC, Proc. 1958, pp. 144–153.
- Klopper, W. J. Brauwissenschaft S. 101 (1955).
- Gough, W. H. J. Inst. Brewing 53. 9 (1956) (Method B).