1. ISO JTC 1/SC 17. ISO/IEC 7816-4 – Identification Cards, Part 4: Inter-Industry Commands for Interchange,
http://www.iso.org
2. ISO JTC 1/SC 17. ISO/IEC 7816-8 – Identification Cards, Part 8: Security-related inter-industry commands,
http://www.iso.org
3. Brands, S.A.: Rethinking public key infrastructures and digital certificates: building in privacy. MIT Press, Cambridge (2001)
4. Lecture Notes in Computer Science;D. Chaum,1990
5. De Cock, D.: Inofficial information on the Belgian ELectronic Personal Identification Card (BELPIC),
https://www.cosic.esat.kuleuven.ac.be/belpic/