Cryptology ePrint Archive: BibTeX Citation of Report 2007/301

@misc{cryptoeprint:2007:301,
    author = {Yuri Borissov and Moon Ho Lee and Svetla Nikova},
    title = {On Asymptotic Behavior of the Ratio Between the Numbers of Binary Primitive and Irreducible Polynomials},
    howpublished = {Cryptology ePrint Archive, Report 2007/301},
    year = {2007},
    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.