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\bibitem{Bogaerts+Gijbels2003} {\textquotedblleft}\textit{Numerical modelling of gas discharge plasmas for various applications}{\textquotedblright}. Bogaerts A, Gijbels R, Vacuum: surface engineering, surface instrumentation \& vacuum technology \textbf{69}, 37 (2003).   http://doi.org/10.1016/S0042-207X(02)00306-8

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