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\bibitem{Zhang_etal2012} {\textquotedblleft}\textit{Fluid simulation of the phase-shift effect in hydrogen capacitively coupled plasmas: 2 : radial uniformity of the plasma characteristics}{\textquotedblright}. Zhang Y-R, Xu X, Bogaerts A, Wang Y-N, Journal of physics: D: applied physics \textbf{45}, 015203 (2012).   http://doi.org/10.1088/0022-3727/45/1/015203

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