@misc{2004-wang
,note={URL: {\tt http://eprint.iacr.org/2004/199/}}
,author={Xiaoyun Wang and Dengguo Feng and Xuejia Lai and Hongbo Yu}
,title={{Collisions for hash functions MD4, MD5, HAVAL--128 and RIPEMD}}
,year={2004}
}