1. Aki, K., and P. G. Richards, 1980, Quantitative seismology, 2nd ed. W. H. Freeman and Co.
2. Anstey, N. A., 1981, Seismic Prospecting Instruments, v. 1: Signal Characteristics and Instrument Specifications, Gerbruder Borntraeger, 154 p.
3. THE RELATIONSHIP BETWEEN MAXIMUM ENTROPY SPECTRA AND MAXIMUM LIKELIHOOD SPECTRA