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Oeschger, H.; Siegenthaler, U. (1988). How has the atmospheric concentration of CO2 changed? In: Rowland, F.S.; Isaksen, I.S.A. (eds.) The changing atmosphere (pp. 5-23). Wiley
Stauffer, B.; Neftel, A. (1988). What have we learned from the ice cores about the atmospheric changes in the concentrations of nitrous oxide, hydrogen peroxide and other trace species? In: Rowland, F.S.; Isaksen, I.S.A. (eds.) The Changing Atmosphere (pp. 67-77). Wiley
