1. Bartlett, M. S., “Periodogram Analysis and Continuous Spectra,” Biometrika, vol. 37 1950, pp. 1–16.
2. Bingham, C., M. Godfrey, and J. W. Tukey, “Modern Techniques of Power Spectrum Estimation,” IEEE Trans, on Audio and Electroacoustics, June 1962, pp. 55–66.
3. Blackman, R., and J. W. Tukey, The Measurement of Power Spectra, New York, Dover Publications, 1959.
4. Brandes, O., J. Farley, M. Hinich, and V. Zackrisson, “The Time Domain and the Frequency Domain in Time Series Analysis,” The Swedish Journal of Economics, vol. 70, 1968, pp.25–49.
5. Cramer, H., Mathematical Methods of Statistics, Princeton, N.J., Princeton University Press, 1946.