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\bibitem{Tavares_etal2003} {\textquotedblleft}\textit{Intersubband plasmons in quasi-one-dimensional electron systems on a liquid helium surface}{\textquotedblright}. Tavares MRS, Hai G-Q, Peeters FM, Studart N, Physical review : B : condensed matter and materials physics \textbf{68}, 140504 (2003).   http://doi.org/10.1103/PhysRevB.68.140504

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