Authors: Valz, Paul D. McLeod, A. Ian

Citation: D. Valz, Paul et Mcleod, A. Ian, A Simplified Derivation of the Variance of Kendall's Rank Correlation Coefficient, American statistician , 44(1), 1990, pp. 39-40

Authors: Valz, Paul D. Thompson, Mary

Citation: D. Valz, Paul et Thompson, Mary, Exact inference for kendall's S and spearman's . with extension to fisher's exact test in r . c contingency tables, Journal of computational and graphical statistics , 3(4), 1994, pp. 459-472