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\bibitem{Du_etal2019} {\textquotedblleft}\textit{Manipulating topological transformations of polar structures through real-time observation of the dynamic polarization evolution}{\textquotedblright}. Du K, Zhang M, Dai C, Zhou ZN, Xie YW, Ren ZH, Tian H, Chen LQ, Van Tendeloo G, Zhang Z, Nature communications \textbf{10}, 4864 (2019).   http://doi.org/10.1038/S41467-019-12864-5

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