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\bibitem{Zeng_etal2019} {\textquotedblleft}\textit{A hidden single-stage martensitic transformation from B2 parent phase to B19 {\textquoteright} martensite phase in an aged Ni$_{51}$Ti$_{49}$ alloy}{\textquotedblright}. Zeng CY, Cao S, Li YY, Zhao ZX, Yao XY, Ma X, Zhang XP, Materials letters \textbf{253}, 99 (2019).   http://doi.org/10.1016/J.MATLET.2019.06.055

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