@misc{cryptoeprint:2014:732,
author = {Tarik Moataz and Travis Mayberry and Erik-Oliver Blass and Agnes Hui Chan},
title = {Resizable Tree-Based Oblivious RAM},
howpublished = {Cryptology ePrint Archive, Report 2014/732},
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.