van Renesse, R. Optical Security and Counterfeit Deterrence Techniques III. SPIE Digital Library.
Lua i Stíl Chicago (17ú heag.)van Renesse, Rudolf. Optical Security and Counterfeit Deterrence Techniques III. SPIE Digital Library.
Lua MLA (9ú heag.)van Renesse, Rudolf. Optical Security and Counterfeit Deterrence Techniques III. SPIE Digital Library.
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