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\bibitem{Damla_etal2009} {\textquotedblleft}\textit{Characterization of gas concrete materials used in buildings of Turkey}{\textquotedblright}. Damla N, {\v C}evik U, Kobya AI, Celik A, Van Grieken R, Kobya Y, Journal of hazardous materials \textbf{168}, 681 (2009).   http://doi.org/10.1016/J.JHAZMAT.2009.02.092

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