@misc{cryptoeprint:2011:423,
    author = {Martin Ågren and Thomas Johansson},
    title = {Linear Cryptanalysis of PRINTcipher --- Trails and Samples Everywhere},
    howpublished = {Cryptology ePrint Archive, Report 2011/423},
    year = {2011},
    url = {http://eprint.iacr.org/2011/423},
}