\bib{1968/bergland-real} \yr 1968 \by Glenn D. Bergland \paper A fast Fourier transform algorithm for real-valued series \jour Communications of the ACM \issn 0001--0782 \vol 11 \pages 703--710 \url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1968/\allowbreak bergland-real \endref