Carlo Blundo, Stelvio Cimato, Alfredo De Santis. Visual cryptography schemes with optimal pixel expansion. Theoretical Computer Science, 369(1-3):169-182, 2006. [doi]
@article{BlundoCS06,
title = {Visual cryptography schemes with optimal pixel expansion},
author = {Carlo Blundo and Stelvio Cimato and Alfredo De Santis},
year = {2006},
doi = {10.1016/j.tcs.2006.08.008},
url = {http://dx.doi.org/10.1016/j.tcs.2006.08.008},
researchr = {https://researchr.org/publication/BlundoCS06},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {369},
number = {1-3},
pages = {169-182},
}