@misc{cryptoeprint:2005:439,
    author = {T. C. Lam},
    title = {A note on the n-spendable extension of Ferguson's single-term off-line coins},
    howpublished = {Cryptology ePrint Archive, Report 2005/439},
    year = {2005},
    url = {http://eprint.iacr.org/2005/439},
}