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\bibitem{Groeger_etal2019} {\textquotedblleft}\textit{Characterization of a nitrogen gliding arc plasmatron using optical emission spectroscopy and high-speed camera}{\textquotedblright}. Gr{\"o}ger S, Ramakers M, Hamme M, Medrano JA, Bibinov N, Gallucci F, Bogaerts A, Awakowicz P, Journal of physics: D: applied physics \textbf{52}, 065201 (2019).   http://doi.org/10.1088/1361-6463/aaefe4

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