@misc{cryptoeprint:2014:971,
    author = {Y. Wei and E. Pasalic and  F. Zhang and W. Wu },
    title = {Key recovery attacks on Grain family using BSW sampling  and certain weaknesses of the filtering function},
    howpublished = {Cryptology ePrint Archive, Report 2014/971},
    year = {2014},
    url = {https://eprint.iacr.org/2014/971},
}