Carlo Blundo, Alfredo De Santis, Douglas R. Stinson. On the Contrast in Visual Cryptography Schemes. J. Cryptology, 12(4):261-289, 1999. [doi]
@article{BlundoSS99,
title = {On the Contrast in Visual Cryptography Schemes},
author = {Carlo Blundo and Alfredo De Santis and Douglas R. Stinson},
year = {1999},
url = {http://link.springer.de/link/service/journals/00145/bibs/12n4p261.html},
researchr = {https://researchr.org/publication/BlundoSS99},
cites = {0},
citedby = {0},
journal = {J. Cryptology},
volume = {12},
number = {4},
pages = {261-289},
}