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Gonçalves, C.; Carvalho, J.J.; Azenha, M.A.; Alpendurada, M.F., Optimization of supercritical fluid extraction of pesticide residues in soil by means of central composite design and analysis by gas chromatography-tandem mass spectrometry, J. Chromatogr. A, 2006, 1110, 1-2, 6-14, https://doi.org/10.1016/j.chroma.2006.01.089 . [all data]