Jung Hee Cheon Byungheup Jun A Polynomial Time Algorithm for the Braid Diffie-Hellman Conjugacy Problem. 212-225 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2729&spage=212 2003 conf/crypto/2003 CRYPTO db/conf/crypto/crypto2003.html#CheonJ03