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\bibitem{Volkov_etal1993} {\textquotedblleft}\textit{Electron microscopy and X-ray study of the growth of FeCr$_{2}$S$_{4}$ spinel single crystals by chemical vapour transport}{\textquotedblright}. Volkov VV, van Heurck C, van Landuyt J, Amelinckx S, Zhukov EG, Polulyak ES, Novotortsev VM, Crystal research and technology \textbf{28}, 1051 (1993).   http://doi.org/10.1002/crat.2170280804

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