Bin Zhang Hongjun Wu Dengguo Feng Feng Bao Chosen Ciphertext Attack on a New Class of Self-Synchronizing Stream Ciphers. 73-83 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3348&spage=73 2004 conf/indocrypt/2004 INDOCRYPT db/conf/indocrypt/indocrypt2004.html#ZhangWFB04