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\bibitem{Bulska_etal2006} {\textquotedblleft}\textit{In vivo investigation of the distribution and the local speciation of selenium in \textbf{Allium cepa L.} by means of microscopic X-ray absorption near-edge structure spectroscopy and confocal microscopic X-ray fluorescence analysis}{\textquotedblright}. Bulska E, Wysocka IA, Wierzbicka MH, Proost K, Janssens K, Falkenberg G, Analytical chemistry \textbf{78}, 7616 (2006).   http://doi.org/10.1021/AC060380S

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