David Chaum Aleksander Essex Richard Carback Jeremy Clark Stefan Popoveniuc Alan T. Sherman Poorvi L. Vora Scantegrity: End-to-End Voter-Verifiable Optical-Scan Voting. 40-46 2008 6 IEEE Security & Privacy 3 http://doi.ieeecomputersociety.org/10.1109/MSP.2008.70 db/journals/ieeesp/ieeesp6.html#ChaumECCPSV08