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\bibitem{Si_etal2011} {\textquotedblleft}\textit{Fluid simulations of frequency effects on nonlinear harmonics in inductively coupled plasma}{\textquotedblright}. Si X-J, Zhao S-X, Xu X, Bogaerts A, Wang Y-N, Physics of plasmas \textbf{18}, 033504 (2011).   http://doi.org/10.1063/1.3566007

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