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jstor.org
Sines, George; Sakellarakis, Yannis A. (Apr 1987). "Lenses in Antiquity". American Journal of Archaeology. 91 (2): 191–6. doi:10.2307/505216. JSTOR505216. S2CID191384703.
Kriss, Timothy C.; Kriss, Vesna Martich (April 1998). "History of the Operating Microscope: From Magnifying Glass to Micro neurosurgery". Neurosurgery. 42 (4): 899–907. doi:10.1097/00006123-199804000-00116. PMID9574655.
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Sines, George; Sakellarakis, Yannis A. (Apr 1987). "Lenses in Antiquity". American Journal of Archaeology. 91 (2): 191–6. doi:10.2307/505216. JSTOR505216. S2CID191384703.