@misc{cryptoeprint:2011:003,
    author = {Daniel J. Bernstein and Tanja Lange and Peter Schwabe},
    title = {On the correct use of the negation map in the Pollard rho method},
    howpublished = {Cryptology ePrint Archive, Report 2011/003},
    year = {2011},
    url = {http://eprint.iacr.org/2011/003},
}