@misc{cryptoeprint:2005:454,
    author = {Keisuke Hakuta and Hisayoshi Sato and Tsuyoshi Takagi},
    title = {Efficient Arithmetic on Subfield Elliptic Curves over Small Odd Characteristics},
    howpublished = {Cryptology ePrint Archive, Report 2005/454},
    year = {2005},
    url = {http://eprint.iacr.org/2005/454},
}