Cryptology ePrint Archive: BibTeX Citation of Report 2007/306

@misc{cryptoeprint:2007:306,
    author = {Thanh-Ha Le and Quoc-Thinh Nguyen-Vuong and Cécile Canovas and Jessy Clédière },
    title = {Novel Approaches for Improving the Power Consumption Models in Correlation Analysis},
    howpublished = {Cryptology ePrint Archive, Report 2007/306},
    year = {2007},
    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.