@misc{cryptoeprint:2011:631,
    author = {Yu-Chi Chen and Du-Shiau Tsai and Gwoboa Horng},
    title = {On the Security of a Cheating Immune Visual Secret  Sharing Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2011/631},
    year = {2011},
    url = {http://eprint.iacr.org/2011/631},
}