1. Oppenheim A.V., and Schafer R.W.,Discrete-Time Signal Processing, Prentice-Hall, Englewood Cliffs, NJ, 879p (1989)
2. Marple S.L.,A tutorial overview of modern spectral estimation, Int. Conf. on Acoustics, Speech, and Signal Processing,4, 2152–2157 (1989)
3. Vaataja H. and Suoranta R.,Coherence analysis of multichannel time series applying conditioned multivariate autoregressive spectra, Proc. of the IEEE International Conference on Acoustics, Speech, and Signal Processing,4, 381–384 (1994)
4. Improving resolution for autoregressive spectral estimation by decimation