GreenbergMarshall G., “A Modification of Thurstone's Law of Comparative Judgment to Accommodate a Judgment Category of ‘Equal’ or ‘No Difference’,” Psychological Bulletin, 64 (August 1965), 108–12.
2.
OdeskyStanford H., “Handling the Neutral Vote in Paired Comparison Product Testing,” Journal of Marketing Research, 4 (May 1967), 199–201.
3.
ThurstoneL. L., “A Law of Comparative Judgment,” Psychological Review, 4 (July 1927), 273–86.
