Jian Guo Krystian Matusiewicz Lars R. Knudsen San Ling Huaxiong Wang Practical Pseudo-collisions for Hash Functions ARIRANG-224/384. 141-156 2009 Selected Areas in Cryptography http://dx.doi.org/10.1007/978-3-642-05445-7_9 conf/sacrypt/2009 db/conf/sacrypt/sacrypt2009.html#GuoMKLW09