“…It is worth mentioning that some results in [38] are doubtful. For example, the FI number defined by (15) seems to be wrong, because we have −1 ≤ αC (r, n, m, k) ≤ 1, which implies that log(−1 + αC (r, n, m, k)) and log(−1 − αC (r, n, m, k)) have no meaning, since −2 ≤ −1 + αC (r, n, m, k) ≤ 0 and −2 ≤ −1 − αC (r, n, m, k) ≤ 0.…”