1. The Statistical Analysis of Time Series;Anderson,1971
2. Fourier Analysis of Time Series: An Introduction;Bloomfield,1976
3. Time Series Analysis;Box,1970
4. Time series analysis: the profilogram method;Citta;Int. J. Chronobiol.,1977
5. Czeisler C. A. (1978) Human circadian physiology: internal organization of temperature, sleep–wake and neuroendocrine rhythms monitored in an environment free of time cues. PhD Thesis, Stanford University.