@misc{cryptoeprint:2012:451,
    author = {John Steinberger, Xiaoming Sun, Zhe Yang},
    title = {Stam's Conjecture and Threshold Phenomena in Collision Resistance},
    howpublished = {Cryptology ePrint Archive, Report 2012/451},
    year = {2012},
    url = {http://eprint.iacr.org/2012/451},
}