@misc{cryptoeprint:2014:223,
    author = {Léo Perrin and  Dmitry Khovratovich},
    title = {Collision Spectrum, Entropy Loss, T-Sponges, and Cryptanalysis of GLUON-64},
    howpublished = {Cryptology ePrint Archive, Report 2014/223},
    year = {2014},
    url = {https://eprint.iacr.org/2014/223},
}