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“Trace analysis of benzene, toluene, ethylbenzene and xylene isomers in environmental samples by low-pressure gas chromatography-ion trap mass spectrometry”. Joos PE, Godoi AFL, de Jong R, de Zeeuw J, Van Grieken R, Journal of chromatography: A: bibliography section 985, 191 (2003). http://doi.org/10.1016/S0021-9673(02)01843-5 |