@misc{cryptoeprint:2002:138,
    author = {Nicolas T. Courtois and Magnus Daum and Patrick Felke},
    title = {On the Security of HFE, HFEv- and Quartz},
    howpublished = {Cryptology ePrint Archive, Report 2002/138},
    year = {2002},
    url = {http://eprint.iacr.org/2002/138},
}