Kj. Berry et Pw. Mielke, Exact and Monte Carlo resampling procedures for the Wilcoxon-Mann-Whitney and Kruskal-Wallis tests, PERC MOT SK, 91(3), 2000, pp. 749-754
Exact and Monte Carlo resampling FORTRAN programs are described for the Wil
coxon-Mann-Whitney rank-sum test and the Kruskal-Wallis one way analysis of
variance for ranks test. The program algorithms compensate for tied values
and do not depend on asymptotic approximations for probability values, unl
ike most algorithms contained in PC-based statistical software packages.