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\bibitem{Al-Emam_etal2021} {\textquotedblleft}\textit{Soot removal from ancient Egyptian complex painted surfaces using a double network gel : empirical tests on the ceiling of the sanctuary of Osiris in the temple of Seti I-Abydos}{\textquotedblright}. Al-Emam E, Motawea AG, Caen J, Janssens K, Heritage science \textbf{9}, 1 (2021).   http://doi.org/10.1186/S40494-020-00473-1

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