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\bibitem{Cagno_etal2012} {\textquotedblleft}\textit{Evidence of early medieval soda ash glass in the archaeological site of San Genesio (Tuscany)}{\textquotedblright}. Cagno S, Favaretto L, Mendera M, Izmer A, Vanhaecke F, Janssens K, Journal of archaeological science \textbf{39}, 1540 (2012).   http://doi.org/10.1016/J.JAS.2011.12.031

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