Bertoni, G., J. Daemen, S. Hoffert, M. Peeters, G. Van Assche, and R. Van Keer. “Farfalle: Parallel Permutation-Based Cryptography”. IACR Transactions on Symmetric Cryptology, Vol. 2017, no. 4, Dec. 2017, pp. 1-38, doi:10.13154/tosc.v2017.i4.1-38.