1. Baur F. (1927): Das Periodogramm hundertjähriger Temperaturbeobachtungen in Berlin (Innenstadt). Meteorol. Zeitschrift, 44, 414–418.
2. Bryson R.A., Dutton J.A. (1961): Some aspects of the variance spectra of tree rings and varves. Ann.N.Y.Acad.Sci. 95, Art.1.
3. Clayton H.H. (1884): A lately discovered meteorological cycle. American Met. Journal, 1, No. 4, 130–144.
4. Clayton H.H. (1885): A lately discovered meteorological cycle, II. American Met. Journal, 1, No. 12, 528–534.
5. Ebdon R.A. (1960): Notes on the wind flow at 50mb in tropical and sub-tropical regions in January 1957 and January 1958. Quart.J.Roy. Met.Soc., 86, 540–542.