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\bibitem{Godoi_etal2004} {\textquotedblleft}\textit{Application of low-pressure gas chromatography-io-trap mass spectrometry to the analysis of the eseential oil of \textbf{Turnera diffusa} (Ward.) Urb}{\textquotedblright}. Godoi AFL, Vilegas W, Godoi RHM, Van Vaeck L, Van Grieken R, Journal of chromatography: A: bibliography section \textbf{1027}, 127 (2004).   http://doi.org/10.1016/J.CHROMA.2003.08.079

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