Dong-Guk Han Nam Su Chang Seok Won Jung Young-Ho Park Chang Han Kim Heuisu Ryu Cryptanalysis of the Full Version Randomized Addition-Subtraction Chains. 67-78 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2727&spage=67 2003 conf/acisp/2003 ACISP db/conf/acisp/acisp2003.html#HanCJPKR03