TY  - BOOK
AU  - van Renesse, Rudolf, ed.
TI  - Optical Security and Counterfeit Deterrence Techniques IV
T2  - Proceedings of SPIE; V. 4677
SN  - 9780819444172 (Print)
PY  - 2002///
CY  - Washington, USA
PB  - SPIE
UR  - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/4677
ER  -