@misc{cryptoeprint:2009:350,
    author = {Harikrishna Narasimhan and Venkatanathan Varadarajan and C. Pandu Rangan},
    title = {Game Theoretic Resistance to Denial of Service Attacks Using Hidden Difficulty Puzzles},
    howpublished = {Cryptology ePrint Archive, Report 2009/350},
    year = {2009},
    url = {http://eprint.iacr.org/2009/350},
}