Cryptology ePrint Archive: BibTeX Citation of Report 2015/224

@misc{cryptoeprint:2015:224,
    author = {Matteo Maffei and Giulio Malavolta and Manuel Reinert and Dominique Schröder},
    title = {GORAM -- Group ORAM for Privacy and Access Control in Outsourced Personal Records},
    howpublished = {Cryptology ePrint Archive, Report 2015/224},
    year = {2015},
    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.