References
- Blomqvist , N. 1950 . On a measure of dependence between two random variables . Ann. Math. Statist. , 21 : 593 – 600 .
- Kruskal , W. H. 1958 . Ordinal measures of association . J. Am. Statist. Assoc. , 53 : 814 – 861 .
- Nelsen , R. B. 1999 . An Introduction to Copulas New York : Springer .
- Nelsen , R. B. , Quesada Molina , J. J. , Rodríguez Lallena , J. A. and Úbeda Flores , M. 2001 . Bounds on bivariate distribution functions with given margins and measures of association . Commun. Statist.—Theory Methods , 30 : 1155 – 1162 .