Cryptology ePrint Archive: BibTeX Citation of Report 2005/391

@misc{cryptoeprint:2005:391,
    author = {Praveen Gauravaram and William Millan and Juanma Gonzalez Nieto },
    title = {Some thoughts on Collision Attacks in the Hash Functions MD5, SHA-0 and SHA-1},
    howpublished = {Cryptology ePrint Archive, Report 2005/391},
    year = {2005},
    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.