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\bibitem{Simonsen_etal2020} {\textquotedblleft}\textit{Formation of zinc oxalate from zinc white in various oil binding media: the influence of atmospheric carbon dioxide by reaction with $^{13}$CO$_{2}$}{\textquotedblright}. Simonsen KP, Poulsen JN, Vanmeert F, Ryhl-Svendsen M, Bendix J, Sanyova J, Janssens K, Mederos-Henry F, Heritage science \textbf{8}, 126 (2020).   http://doi.org/10.1186/S40494-020-00467-Z

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