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\bibitem{Bernaerts_etal1997} {\textquotedblleft}\textit{Microstructure and formation mechanisms of cylindrical and conical scrolls of the misfit layer compounds PbNb$_{n}$S$_{2n+1}$}{\textquotedblright}. Bernaerts D, Amelinckx S, Van Tendeloo G, van Landuyt J, Journal of crystal growth \textbf{172}, 433 (1997)

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