Cryptology ePrint Archive: BibTeX Citation of Report 2013/761

@misc{cryptoeprint:2013:761,
    author = {Pierre-Alain Fouque and Antoine Joux and Chrysanthi Mavromati},
    title = {Multi-user collisions: Applications to Discrete Logarithm, Even-Mansour and PRINCE},
    howpublished = {Cryptology ePrint Archive, Report 2013/761},
    year = {2013},
    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.