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\bibitem{Kolev+Bogaerts2006} {\textquotedblleft}\textit{PIC -- MCC numerical simulation of a DC planar magnetron}{\textquotedblright}. Kolev I, Bogaerts A, Plasma processes and polymers \textbf{3}, 127 (2006).   http://doi.org/10.1002/ppap.200500118

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