@misc{cryptoeprint:2015:241,
    author = {Elena Dubrova and Martin Hell},
    title = {Espresso: A Stream Cipher for 5G Wireless Communication Systems},
    howpublished = {Cryptology ePrint Archive, Report 2015/241},
    year = {2015},
    url = {https://eprint.iacr.org/2015/241},
}