Cryptology ePrint Archive: BibTeX Citation of Report 2008/201

@misc{cryptoeprint:2008:201,
    author = {J. Wu and D.R. Stinson},
    title = {How To Ensure Forward and Backward Untraceability of RFID Identification Schemes By Using A Robust PRBG},
    howpublished = {Cryptology ePrint Archive, Report 2008/201},
    year = {2008},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.