Kim Hartmann Christoph Steup On the security of international data exchange services for e-governance systems. 472-476 2015 39 Datenschutz und Datensicherheit 7 https://doi.org/10.1007/s11623-015-0452-2 https://www.wikidata.org/entity/Q115144994 db/journals/dud/dud39.html#HartmannS15