Split-radix generalized fast Fourier transform. - Soo-Chang Pei; Tzyy-Liang Luo (Signal Process., 1996)

Fractional Fourier series expansion for finite signals and dual extension to discrete-time fractional Fourier transform. - Soo-Chang Pei; Min-Hung Yeh; Tzyy-Liang Luo (IEEE Trans. Signal Process., 1999)