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2. American Society for Testing and Materials (ASTM), 1984. Correlation of subjective–objective methods in the study of odors and taste. STP 440, ASTM, Philadelphia.
3. American Society for Testing and Materials (ASTM), 1991. Standard practice for determination of odor and taste thresholds by a forced-choice ascending concentration series method of limits. E679-91, ASTM, Philadelphia.
4. American Society for Testing and Materials (ASTM), 1992. Atlas of Odor Character Profiles. DS 61, ASTM, Philadelphia.
5. American Society for Testing and Materials (ASTM), 1997. Standard practices for referencing suprathreshold odor intensity. E544-75, ASTM, Philadelphia.