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Levsen, K., Schneider, E., Boerboom, A. J. H., Kistemaker, P. G.& McLuckey, S. A. (1983). Mass spectrometric identification of surfactants. Analysis of Organic Micropollutants in Water : Proceedings of the Third Eropean Symposium Held in Oslo, Norway, September 19-21, 1983, 132–140.