@misc{cryptoeprint:2014:305,
    author = {Florian Mendel and Vincent Rijmen and Martin Schläffer},
    title = {Collision Attack on 5 Rounds of Grøstl},
    howpublished = {Cryptology ePrint Archive, Report 2014/305},
    year = {2014},
    url = {https://eprint.iacr.org/2014/305},
}