Goodman, L.A. (1979) Simple Models for the Analysis of Association in Cross-Classifications Having Ordered Categories. Journal of the American Statistical Association, 74, 537-552. http://dx.doi.org/10.1080/01621459.1979.10481650
 Tomizawa, S., Miyamoto, N. and Sakurai, M. (2008) Decomposition of Independence Model and Separability of Its Test Statistic for Two-Way Contingency Tables with Ordered Categories. Advances and Applications in Statistics, 8, 209-218.
 Kendall, M.G. (1945) The Treatment of Ties in Ranking Problems. Biometrika, 33, 239-251.http://dx.doi.org/10.1093/biomet/33.3.239
 Tahata, K., Miyamoto, N. and Tomizawa, S. (2008) Decomposition of Independence Using Pearson, Kendall and Spearman’s Correlations and Association Model for Two-Way Classifications. Far East Journal of Theoretical Statistics, 25, 273-283.
 Grizzle, J.E., Starmer, C.F. and Koch, G.G. (1969) Analysis of Categorical Data by Linear Models. Biometrics, 25, 489-504. http://dx.doi.org/10.2307/2528901
 Tomizawa, S. (1992) More Parsimonious Linear-by-Linear Association Model in the Analysis of Cross-Classifications Having Ordered Categories. Biometrical Journal, 34, 129-140. http://dx.doi.org/10.1002/bimj.4710340202