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\bibitem{Bultinck_etal2010} {\textquotedblleft}\textit{The origin of Bohm diffusion, investigated by a comparison of different modelling methods}{\textquotedblright}. Bultinck E, Mahieu S, Depla D, Bogaerts A, Journal of physics: D: applied physics \textbf{43}, 292001 (2010).   http://doi.org/10.1088/0022-3727/43/29/292001

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