1. Proceedings LNCS 473;X. Lai,1991
2. Schnorr, C.P.: FFT-Hash II, efficient cryptographic hashing. Proceedings EUROCRYPT'92. Springer LNCS 658 (1992), pp. 45–54.
3. Vaudenay, S.: FFT-Hash II is not yet Collision-free. Advances in Cryptology, Proceedings of Crypto'92, Springer LNCS 740, (1993) pp. 587–593.
4. Schnorr, C.P. and Vaudenay, S.: Black Box Cryptanalysis of Hash Networks based on Multipermutations. Technical Report, Universität Frankfurt — ENS Paris, December 1993. Submitted to Eurocrypt'94.