Proficiency testing by interlaboratory comparisons - Part 2: Selection and use of proficiency testing schemes by laboratory accreditation bodies (ISO/IEC Guide 43-2:1997)
Draft Document - Industrial-Process Measurement and Control - Data Structures and Elements in Process Equipment Catalogues - Part 11: List of Properties (LOP) of measuring equipment for electronic data exchange - generic structures (IEC 65E/152/CD:2009)