Cryptology ePrint Archive: BibTeX Citation of Report 2013/542

@misc{cryptoeprint:2013:542,
    author = {Przemysław Dąbrowski and Grzegorz Łabuzek and Tomasz Rachwalik and Janusz Szmidt},
    title = {Searching for Nonlinear Feedback Shift Registers with Parallel Computing},
    howpublished = {Cryptology ePrint Archive, Report 2013/542},
    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.