Cryptology ePrint Archive: BibTeX Citation of Report 2011/055

@misc{cryptoeprint:2011:055,
    author = {Dongdai Lin and Jean-Charles Faugere and Ludovic Perret and Tianze Wang},
    title = {On Enumeration of Polynomial Equivalence Classes and Their Application to MPKC},
    howpublished = {Cryptology ePrint Archive, Report 2011/055},
    year = {2011},
    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.