@misc{cryptoeprint:2004:242,
    author = {Vladimir Shpilrain and Gabriel Zapata},
    title = {Combinatorial group theory and public key cryptography},
    howpublished = {Cryptology ePrint Archive, Report 2004/242},
    year = {2004},
    url = {http://eprint.iacr.org/2004/242},
}