1. A-SIT: Mobile Phone Signature & Citizen Card. http://www.buergerkarte.at
2. Centner, M., Orthacker, C., Bauer, W.: Minimal-Footprint Middleware for theCreation of Qualified Signatures. In: Institute for Systems and Technologies of Information, Control and Communication (ed.) Proceedings of the 6th International Conference onWeb Information Systems and Technologies, pp. 64–69. INSTICC - Institute for Systems and Technologies of Information, Control and Communication, Portugal (2010)
3. CWA 14170: Security requirements for signature creation applications (2004)
4. Lecture Notes in Computer Science;D Cock,2004
5. Ducastel, N.: International Comparison eID Means. Technical report PBLQ (2015)