Tree-ring variables as proxy-climate indicators: problems with low-frequency signals

Briffa KR, Jones PD, Schweingruber FH, Karlen W & Shiyatov SG
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Briffa, K. R., Jones, P. D., Schweingruber, F. H., Karlen, W., & Shiyatov, S. G. (1996). Tree-ring variables as proxy-climate indicators: problems with low-frequency signals. In P. D. Jones, R. S. Bradley, & J. Jouzel (Eds.), NATO ASI Series. Climatic Variations and Forcing Mechanisms of the Last 2000 Years (pp. 9-41). Berlin; Heidelberg: Springer.