Die sichere Stimmabgabe über das Internet: Kryptographie und Infrastruktur. - Alexander Prosser; Robert Kofler; Robert Krimmer; Martin Karl Unger; Robert Müller-Török (Informationswirtschaft: Ein Sektor mit Zukunft, 2003)

Implementation of Quorum-Based Decisions in an Election Committee. - Alexander Prosser; Robert Kofler; Robert Krimmer; Martin Karl Unger (EGOV, 2004)

Security Assets in E-Voting. - Alexander Prosser; Robert Kofler; Robert Krimmer; Martin Karl Unger (Electronic Voting in Europe, 2004)

The Role of Digital Signature Cards in Electronic Voting. - Robert Kofler; Robert Krimmer; Alexander Prosser; Martin Karl Unger (HICSS, 2004)

The Role of the Election Commission in Electronic Voting. - Alexander Prosser; Robert Krimmer; Robert Kofler; Martin Karl Unger (HICSS, 2005)