1. Killmann, W., Schindler, W.: AIS 31: Functionality Classes and Evaluation Methodology for True (Physical) Random Number Generators, version 3.1, Bundesamt für Sicherheit in der Informationstechnik (BSI), Bonn (2001)
2. Lecture Notes in Computer Science;W. Schindler,2003
3. FIPS PUB 140-1: Security requirements for cryptographic modules (1994)
4. FIPS PUB 140-2: Security requirements for cryptographic modules (2001)
5. Lecture Notes in Computer Science;R. Fairfield,1985