PT Unknown AU Schmidt, A Volkamer, M Buchmann, J TI An Evaluation and Certification Approach to Enable Voting Service Providers SE Electronic voting 2010 : 4th International Conference, co-organized by Council of Europe, Gesellschaft für Informatik and E-Voting.CC, July 21st - 24th, 2010 in Castle Hofen, Bregenz, Austria. Eds.: Robert Krimmer, Rüdiger Grimm PY 2010 BP 135 EP 148 VL 167 LA english ER