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\bibitem{Fedina_etal1997} {\textquotedblleft}\textit{In-situ HREM irradiation study of point defect clustering in strained Ge$_{x}$Si$_{1-x}$/(001)Si heterostructure}{\textquotedblright}. Fedina L, Lebedev OI, Van Tendeloo G, van Landuyt J, Conference series of the Institute of Physics \textbf{157}, 55 (1997)

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