Title: Estimators for a Class of Bivariate Measures of Concordance for Copulas,
Abstract: In the present paper we propose and study estimators for a wide class of
bivariate measures of concordance for copulas. These measures of concordance
are generated by a copula and generalize Spearman's rho and Gini's gamma. In
the case of Spearman's rho and Gini's gamma the estimators turn out to be the
usual sample versions of these measures of concordance.