@misc{cryptoeprint:2009:318,
    author = {ERRA Robert and GRENIER Chirstophe},
    title = {The Fermat  factorization method revisited},
    howpublished = {Cryptology ePrint Archive, Report 2009/318},
    year = {2009},
    url = {http://eprint.iacr.org/2009/318},
}