1. Alvo, M., & Cabilio, P. (1995a). Rank correlation methods for missing data. Canadian Journal of Statistics, 23, 345–358.
2. Alvo, M., & Ertas, K. (1992). Graphical methods for ranking data. Canadian Journal of Statistics, 20(4), 469–482.
3. Baba, Y. (1986). Graphical analysis of rank data. Behaviormetrika, 19, 1–15.
4. Borg, I., & Groenen, P. J. F. (2005). Modern multidimensional scaling: Theory and applications (2nd ed.). New York: Springer.
5. Carroll, J. D. (1972). Individual differences and multidimensional scaling. In R. N. Shepard, R. A. Kimball, & S. B. Nerlove (Eds.), Multidimensional scaling: Theory and applications in the behavioral sciences, Volume I: Theory. New York: Seminar Press.