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\bibitem{Xu_etal1992} {\textquotedblleft}\textit{Streaming-to-accumulation transition in a 2-dimensional electron-system in a polar semiconductor}{\textquotedblright}. Xu W, Peeters FM, Devreese JT, Physical review : B : condensed matter and materials physics \textbf{46}, 7571 (1992).   http://doi.org/10.1103/PhysRevB.46.7571

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