Cryptology ePrint Archive: BibTeX Citation of Report 2013/432

@misc{cryptoeprint:2013:432,
    author = {Eric Brier and David Naccache and Li-yao Xia },
    title = {How to Sign Paper Contracts? Conjectures & Evidence Related to Equitable & Efficient Collaborative Task Scheduling},
    howpublished = {Cryptology ePrint Archive, Report 2013/432},
    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.