Kun Peng Riza Aditya Colin Boyd Ed Dawson Byoungcheon Lee Multiplicative Homomorphic E-Voting. 61-72 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3348&spage=61 2004 conf/indocrypt/2004 INDOCRYPT db/conf/indocrypt/indocrypt2004.html#PengABDL04