Cryptology ePrint Archive: BibTeX Citation of Report 2012/376

@misc{cryptoeprint:2012:376,
    author = {Colleen M. Swanson and  Douglas R. Stinson},
    title = {Combinatorial Solutions Providing Improved Security for the Generalized Russian Cards Problem},
    howpublished = {Cryptology ePrint Archive, Report 2012/376},
    year = {2012},
    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.