Design of cascaded phase keys for hierarchical security system
- Author(s):
- Yeh, C.H. ( National Chung Cheng Univ, (Taiwan) )
- Chang, H.T.
- Chien, H.C.
- Kuo, C.J.
- Publication title:
- Optical Security and Counterfeit Deterrence Techniques IV
- Title of ser.:
- Proceedings of SPIE - the International Society for Optical Engineering
- Ser. no.:
- 4677
- Pub. Year:
- 2002
- Page(from):
- 372
- Page(to):
- 380
- Pages:
- 9
- Pub. info.:
- Bellingham, Wash.: SPIE-The International Society for Optical Engineering
- ISSN:
- 0277786X
- ISBN:
- 9780819444172 [0819444170]
- Language:
- English
- Call no.:
- P63600/4677
- Type:
- Conference Proceedings
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