\bib{1987/evans} \yr 1987 \mr 88g:11093 \by David M. W. Evans \paper An improved digit-reversal permutation algorithm for the fast Fourier and Hartley transforms \jour IEEE Transactions on Acoustics, Speech, and Signal Processing \issn 0096--3518 \vol 35 \pages 1120--1125 \url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1987/\allowbreak evans \endref