Emmanuel Benoist Bernhard Anrig David-Olivier Jaquet-Chiffelle Internet-Voting: Opportunity or Threat for Democracy? 29-37 2007 conf/voteid/2007 VOTE-ID http://dx.doi.org/10.1007/978-3-540-77493-8_3 db/conf/voteid/voteid2007.html#BenoistAJ07