G.  Mollenhauer, Eglinton, T. I., Ohkouchi, N., Grootes, P. M., Muller, P. J., Rullkotter, J., and Schneider, R. R., ?Radiocarbon dating of alkenones in sediments from the Namibian continental margin?, in European Geophysical Society, XXVII General Assembly, Nice, France, 2002.