1. Climate Diagnostics Bulletin, July 1993,1993
2. Atmospheric carbon dioxide, the Southern Oscillation, and the weak 1975 El Niǹo;Bacastow;Science,1980
3. Isotopic versus micrometeorologic ocean CO2 fluxes: a serious conflict;Broecker;Journal of Geophysical Research,1986
4. Atmospheric CO2—modern record, Christmas Island;Conway,1991