@ARTICLE {6028,
author={J. Pereira and H. A. Silva},
doi={10.1049/iet-spr.2010.0195},
journal={IET Signal Processing},
title={Orthogonal perfect discrete Fourier transform sequences},
year={2012},
month={April},
volume={6},
number={2},
pages={107-113},
ISSN={1751-9675}
}