@misc{cryptoeprint:2011:073,
    author = {Simon R. Blackburn, Carlos Cid and Ciaran Mullan},
    title = {Cryptanalysis of three matrix-based key establishment protocols},
    howpublished = {Cryptology ePrint Archive, Report 2011/073},
    year = {2011},
    url = {http://eprint.iacr.org/2011/073},
}