Title	Authors	Year
Solar Activity Cycles Revealed by Time Series Analysis of Argon-37, Sunspot-Number and Beryllium-10 Records. In: Solar-Terrestrial Variability and Global Change, IUGG/IAGA Assembly Vienna 1991, edited by W. Schröder u. J.P. Legrand, pp. 11-34.	Haubold, H.J. u. J. Beer	1992

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