Let[Figure not available: see fulltext.] be a distribution in[Figure not available: see fulltext.], let[Figure not available: see fulltext.] be the n-fold convolution of[Figure not available: see fulltext.] with itself, and let[Figure not available: see fulltext.]. It is proved that[Figure not available: see fulltext.] where[Figure not available: see fulltext.] depends on certain characteristics of[Figure not available: see fulltext.].