Cryptology ePrint Archive: BibTeX Citation of Report 2007/375

@misc{cryptoeprint:2007:375,
    author = {Gregory Hirshman},
    title = {Further Musings on the Wang et al. MD5 Collision: Improvements and Corrections on the Work of Hawkes, Paddon, and Rose},
    howpublished = {Cryptology ePrint Archive, Report 2007/375},
    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.