@misc{cryptoeprint:2008:223,
    author = {Bert W. Leung and Felix Y. Ng and Duncan S. Wong},
    title = {On the Security of a Visual Cryptography Scheme for Color Images},
    howpublished = {Cryptology ePrint Archive, Report 2008/223},
    year = {2008},
    url = {http://eprint.iacr.org/2008/223},
}