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MacLeod, Christine (1987). "Accident or Design? George Ravenscroft's Patent and the Invention of Lead-Crystal Glass". Technology and Culture. 28 (4): 776–803. doi:10.2307/3105182. JSTOR3105182.
nih.gov
ncbi.nlm.nih.gov
Guadagnino, E; Gambaro, M; Gramiccioni, L; Denaro, M; Feliciani, R; Baldini, M; Stacchini, P; Giovannangeli, S; et al. (2000). "Estimation of lead intake from crystalware under conditions of consumer use". Food Additives and Contaminants. 17 (3): 205–18. doi:10.1080/026520300283469. PMID10827902.