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\bibitem{Spooren_etal2016} {\textquotedblleft}\textit{In-situ chromium and vanadium recovery of landfilled ferrochromium and stainless steel slags}{\textquotedblright}. Spooren J, Kim E, Horckmans L, Broos K, Nielsen P, Quaghebeur M, Chemical engineering journal \textbf{303}, 359 (2016).   http://doi.org/10.1016/J.CEJ.2016.05.128

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