1. IEC GUIDE 115:2007, Application of uncertainty of measurement to conformity assessment activities in the electrotechnical sector (IEC, Switzerland, 2007)
2. ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories (ISO, Switzerland, 2005)
3. ISO/IEC Guide 98-1:2009, Uncertainty of measurement – Part 1: Introduction to the expression of uncertainty in measurement (ISO, Switzerland, 2009)
4. Calibration method to assess the accuracy of measurement devices using the theory of uncertainty