1. Degree of difference test method in sensory evaluation of heterogeneous product types;Aust;Journal of Food Science,1985
2. Statistical models for the degree of difference test;Bi;Food Quality and Preference,2002
3. Christensen, R. H. B. & Brockhoff, P. B. (2011). Statistical methodology for sensory discrimination tests and its implementation in sensR. Retrieved from .
4. Estimation and inference in the same–different test;Christensen;Food Quality and Preference,2009
5. Christensen, R. H. B., Ennis, J. M., Ennis, D. M., & Brockhoff, P. B. (2012). A Thurstonian model for the degree of difference test with extensions to unequal variance, sequence effects and replicated data. 11th sensometrics meeting, Rennes, France, July 10th–13th, 2012.