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"Visual cryptography schemes with optimal pixel expansion."
Carlo Blundo, Stelvio Cimato, Alfredo De Santis (2006)
- Carlo Blundo
, Stelvio Cimato
, Alfredo De Santis
:
Visual cryptography schemes with optimal pixel expansion. Theor. Comput. Sci. 369(1-3): 169-182 (2006)

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