Burnett_Barr            Burnett and Barr Method for Nonparametric
                        ANCOVA
Harwell_Serlin          Harwell and Serlin Method for Nonparametric
                        ANCOVA
Hettmansperger_McKean   Hettmansperger and McKean Method for ANCOVA
McSweeny_Porter         McSweeny and Porter Method for Nonparametric
                        ANCOVA
Puri_Sen_MB             Puri and Sen Method with Biased
                        Variance-Covariance Matrix for Nonparametric
                        ANCOVA: Multiple Covariates
Puri_Sen_MU             Puri and Sen Method with Unbiased
                        Variance-Covariance Matrix for Nonparametric
                        ANCOVA: Multiple Covariates
Puri_Sen_OB             Puri and Sen Method with Biased
                        Variance-Covariance Matrix for Nonparametric
                        ANCOVA: One Covariate
Puri_Sen_OU             Puri and Sen Method with Unbiased
                        Variance-Covariance Matrix for Nonparametric
                        ANCOVA: One Covariate
Quade                   Quade Method for Nonparametric ANCOVA
Shirley                 Shirley Method for Nonparametric ANCOVA
