- The Corollaries 1-3 are very interesting and the proofs straightforward, but it is not evident how they should be considered from an interpretative and applied point of view. As a matter of fact, the useful results achieved by the author in Section 2.1 are poorly discussed.
- I would suggest to collect the proofs in an Appendix at the end of the paper and to expand the description of Sinha et al.’s (2006) KM statistic.