The authors develop a model for multiple paired comparison product tests. Tested on several data sets, the model is shown to describe the data accurately. The model provides an estimate for the frequency of "errors" in the data.
BEMMAOR, A.C. and WAGNER, U. (1996). Estimating Preferences from Ratings in Single and Multiple Paired Comparison Product Tests. In: First French-German Workshop on Quantitative Methods in Marketing, May 1-3, Humboldt University. Berlin.