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Borella, Silvio; Leuenberger, Markus; Saurer, Matthias (1999). Analysis of δ18O in tree rings: Wood-cellulose comparison and method dependent sensitivity. Journal of Geophysical Research: Atmospheres, 104(D16), pp. 19267-19273. American Geophysical Union 10.1029/1999JD900298
Borella, Silvio; Leuenberger, Markus; Saurer, Matthias; Siegwolf, Rolf (1998). Reducing uncertainties in δ13C analysis of tree rings: Pooling, milling, and cellulose extraction. Journal of Geophysical Research: Atmospheres, 103(D16), pp. 19519-19526. American Geophysical Union 10.1029/98JD01169
Saurer, Matthias; Borella, Silvio; Schweingruber, Fritz; Siegwolf, Rolf (1997). Stable carbon isotopes in tree rings of beech: climatic versus site-related influences. Trees - Structure and Function, 11(5), pp. 291-297. Springer 10.1007/s004680050087
