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Optical Engineering

New optical security device based on one-hundred-year-old photographic technique
Author(s): Hans I. Bjelkhagen
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Paper Details

Date Published: 1 January 1999
PDF: 7 pages
Opt. Eng. 38(1) doi: 10.1117/1.602061
Published in: Optical Engineering Volume 38, Issue 1
Show Author Affiliations
Hans I. Bjelkhagen, De Montfort Univ (United Kingdom)

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