@misc{cryptoeprint:2017:089,
    author = {Yuri Borissov, and Peter Boyvalenkov, and Robert Tsenkov},
    title = {On a Linear Cryptanalysis of a Family of Modified DES Ciphers with Even Weight S-boxes},
    howpublished = {Cryptology ePrint Archive, Report 2017/089},
    year = {2017},
    url = {https://eprint.iacr.org/2017/089},
}