Cryptology ePrint Archive: BibTeX Citation of Report 2014/044

@misc{cryptoeprint:2014:044,
    author = {Lichun Li and Michael Militzer and Anwitaman Datta},
    title = {rPIR: Ramp Secret Sharing based Communication Efficient Private Information Retrieval},
    howpublished = {Cryptology ePrint Archive, Report 2014/044},
    year = {2014},
    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.