1. The cepstrum: A guide to processing;Childers,1977
2. A stability test for 2-D recursive digital filters using the complex cepstrum;Ekstrom,1977
3. Two-dimensional spectral factorization with applications in recursive digital filtering;Ekstrom;IEEE Trans. Acoust., Speech, and Signal Process.,1976
4. Applications of Digital Signal Processing,1978
5. Digital Signal Processing;Oppenheim,1975