1. JCGM 200, International Vocabulary of Metrology - Basic and General Concepts and Associated Terms (VIM) (Also Available As ISO/IEC Guide 99:2007), 2012.
2. JCGM 100, Evaluation of Measurement Data – Guide to the Expression of Uncertainty in Measurement (Also Available As ISO/IEC Guide 983:2008), 2008.
3. ISO 17450-2, GPS – General concepts – Part 2: Basic Tenets, Specifications, Operators, Uncertainties and Ambiguities, 2012.
4. ISO 8015, GPS – Fundamentals – Concepts, Principles and Rules, 2011.
5. ISO 17450-1, GPS – General Concepts – Part 1: Model for Geometrical Specification and Verification, 2011.