[1] Object Management Group, Unified Modeling Language (UML), V2.5.1, 2017, https://www.omg.org/spec/UML/2.5.1/

[2] National Institute of Standards and Technology (NIST), Computer Security Resource Center, Recommendation for Random Number Generation Using Deterministic Random Bit Generators, SP 800-90A Rev. 1, June 2015

[3] Anwendungshinweise und Interpretationen (AIS) 20, Functionality classes and evaluation methodology for physical random number generators. Bundesamt für Sicherheit in der Informationstechnik (BSI), 1999

[4] Anwendungshinweise und Interpretationen (AIS) 31, functionality classes and evaluation methodology for physical random number generators, Bundesamt für Sicherheit in der Informationstechnik (BSI), 2001

[5] ISO/IEC 18031, Information technology, Security techniques. Random Bit Generation

[6] IEC 61000-6-7, Electromagnetic compatibility (EMC) – Part 6-7: Generic standards – Immunity requirements for equipment intended to perform functions in a safety related system (functional safety) in industrial locations

[7] IEC 61511 (all parts), Functional safety – Safety instrumented systems for the process industry sector

[8] IEC 62061, Safety of machinery – Functional safety of safety-related control systems

[9] ISO 13849 (all parts), Safety of machinery – Safety-related parts of control systems

[10] ISO 13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design

[11] IEC 62541-2, OPC Unified Architecture – Part 2: Security

[12] ISO 13849-2, Safety of machinery – Safety-related parts of control systems – Part 2: Validation

[13] IEC 62541-7, OPC Unified Architecture – Part 7: Profiles

[14] IEC 62541-8, OPC Unified Architecture – Part 8: Data Access

[15] OPC 10010 (all parts), OPC Test Lab Specification

[16] ___________