Cryptology ePrint Archive: BibTeX Citation of Report 2013/659

@misc{cryptoeprint:2013:659,
    author = {Rahim Toluee, Maryam Rajabzadeh Asaar, Mahmoud Salmasizadeh},
    title = {A provable secure anonymous proxy signature scheme without random oracles},
    howpublished = {Cryptology ePrint Archive, Report 2013/659},
    year = {2013},
    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.