For a complete study of Venetian glassmaking developments from the Middle Ages through the Renaissance, see M. Verità, “L’invenzione del cristallo muranese: Una verifica analitica della fonti storiche,” Rivista della Stazione Sperimentale del Vetro, v. 15, no. 1, January/February 1985, pp. 17–29. For a more recent discussion of the same subject in English, see Koen Janssens, ed., Modern Methods for Analysing Archaeological and Historical Glass, 2 vv., Chichester, West Sussex, U.K.: John Wiley & Sons, 2013.