1. Augustsson, T. and V. Ramanathan, 1977: A radiative convective model study on the CO2 climate problem. J. Atmos. Sci., 34, 448–451.
2. Bacastow, R. B., 1978: Modulation of atmospheric carbon dioxide by the Southern Oscillation. Nature, 261, 116–118.
3. Bacastow, R. B. and C. D. Keeling, 1981: Atmospheric CO2 and the Southern Oscillation: effects associated with recent El Nino events. In: Proc. WMO/ICSU/UNEP Conference on Analysis and Interpretation of Atmospheric CO2 Data, 109–112, World Meteorological Organization, Geneva.
4. Bacastow, R. B., C. D. Keeling, and T. P. Whorf, 1985: Seasonal ampli-tude increase in atmospheric CO2 concentration at Mauna Loa, Hawaii, 1959-1982. J. Geophys. Res., 90, 10,529–10, 540.
5. Beer, J., U. Siegenthaler, H. Oeschger, M. Andree, G. Bonani, M. Suter, W. Wolfli, R. C. Finkel, and C. C. Langway, 1984: Temporal 10Be variations. In: Proc. 18th Internat. Cosmic Ray Conf., Bangalore, 9, 317–320.