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\bibitem{Bogaerts+Gijbels2000} {\textquotedblleft}\textit{Description of the argon-excited levels in a radio-frequency and direct current glow discharge}{\textquotedblright}. Bogaerts A, Gijbels R, Spectrochimica acta: part B : atomic spectroscopy \textbf{55}, 263 (2000).   http://doi.org/10.1016/S0584-8547(00)00143-9

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