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Kromer, B., and Becker, B. (1993). German Oak and Pine C-14 Calibration, 7200-9439 BC. Radiocarbon 35: 125-135.

Kromer, B., and Spurk, M. (1998). Revision and tentative extension of the tree-ring based C-14 calibration, 9200-11,855 cal BP. Radiocarbon 40: 1117-1125.

Kromer, B., Manning,S.W., Kuniholm, P.I., Newton, M.W., Spurk, M. & Levin, I. 2001. Regional 14CO2 offsets in the troposphere: magnitude, mechanisms, and consequences. Science 294: 2529-2532.

Kromer, B., S. W. Manning, M. Friedrich, S. Talamo and N. Trano (2010). 14C Calibration in the 2nd and 1st Millennia BC Eastern Mediterranean Radiocarbon Comparison Project (EMRCP). Radiocarbon 52(3): 875-886.

Hua, Q., Barbetti, M., Fink, D., Kaiser, K. F., Friedrich, M., Kromer, B., Levchenko, V. A., Zoppi, U., Smith, A. M., and Bertuch, F. (2009). Atmospheric 14C variations derived from tree rings during the early Younger Dryas. Quaternary Science Reviews 28, 2982-2990.