Cryptology ePrint Archive: BibTeX Citation of Report 2013/211

@misc{cryptoeprint:2013:211,
    author = {Christina Boura and Anne Canteaut},
    title = {A new criterion for avoiding the propagation of linear relations through an Sbox (Full version)},
    howpublished = {Cryptology ePrint Archive, Report 2013/211},
    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.