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Beer, Juerg; Bonani, Georges; Dietrich, Beate; Finkel, R. C.; Hofmann, H. J.; Lehmann, B. E.; Oeschger, Hans; Stauffer, Bernhard; Suter, Martin; Wölfli, Willy (1991). A high resolution 10Be record in polar ice. Radiocarbon, 33(2), p. 175. Arizona Board of Regents, University of Arizona
