@misc{cryptoeprint:2021:819,
    author = {Christof Beierle and Patrick Derbez and Gregor Leander and Gaëtan Leurent and Håvard Raddum and Yann Rotella and David Rupprecht and Lukas Stennes},
    title = {Cryptanalysis of the GPRS Encryption Algorithms GEA-1 and GEA-2},
    howpublished = {Cryptology ePrint Archive, Report 2021/819},
    year = {2021},
    url = {https://eprint.iacr.org/2021/819},
}