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\bibitem{vanBockstal_etal1995} {\textquotedblleft}\textit{Cyclotron-resonance of 2D electrons at Si-δ-doped InSb layers grown on GaAs}{\textquotedblright}. van Bockstal L, Mahy M, de Keyser A, Hoeks W, Herlach F, Peeters FM, van de Graaf W, Borghs G, Physica: B : condensed matter \textbf{211}, 455 (1995)

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