Cryptology ePrint Archive: BibTeX Citation of Report 2010/393

@misc{cryptoeprint:2010:393,
    author = {Jue-Sam Chou 1*, Yalin Chen 2, Chun-Hui Huang 3},
    title = {A Privacy-Flexible Password Authentication Scheme for Multi-Server Environment},
    howpublished = {Cryptology ePrint Archive, Report 2010/393},
    year = {2010},
    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.