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\bibitem{Bonroy_etal2011} {\textquotedblleft}\textit{Rapid automated measurement system for simultaneous determination of effective air-filled porosity and soil gas diffusivity}{\textquotedblright}. Bonroy J, Volckaert M, Seuntjens P, Soil Science Society of America journal \textbf{75}, 408 (2011).   http://doi.org/10.2136/SSSAJ2010.0102

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