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\bibitem{Liu_etal2013} {\textquotedblleft}\textit{Electron bounce resonance heating in dual-frequency capacitively coupled oxygen discharges}{\textquotedblright}. Liu Y-X, Zhang Q-Z, Liu L, Song Y-H, Bogaerts A, Wang Y-N, Plasma sources science and technology \textbf{22}, 025012 (2013).   http://doi.org/10.1088/0963-0252/22/2/025012

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