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\bibitem{Zhang_etal2012} {\textquotedblleft}\textit{Fluid simulation of the phase-shift effect in Ar/CF$_{4}$ capacitively coupled plasmas}{\textquotedblright}. Zhang Y-R, Bogaerts A, Wang Y-N, Journal of physics: D: applied physics \textbf{45}, 485204 (2012).   http://doi.org/10.1088/0022-3727/45/48/485204

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