Cryptology ePrint Archive: BibTeX Citation of Report 2015/623

@misc{cryptoeprint:2015:623,
    author = {Abdelkarim Cherkaoui, Lilian Bossuet and Cédric Marchand},
    title = {Design, Evaluation and Optimization of Physical Unclonable Functions based on Transient Effect Ring Oscillators},
    howpublished = {Cryptology ePrint Archive, Report 2015/623},
    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.