@misc{cryptoeprint:2009:143,
    author = {Soyoung Park and Sang-Ho Lee and Joohan Lee},
    title = {Multiple and Unlinkable Public Key Encryption without Certificates},
    howpublished = {Cryptology ePrint Archive, Report 2009/143},
    year = {2009},
    url = {http://eprint.iacr.org/2009/143},
}