1. ISO/IEC 17025:2017. General requirements for the competence of testing and calibration laboratories
2. ISO/IEC 17043:2010. Conformity assessment—General requirements for proficiency testing
3. JCGM 200:2012. International vocabulary of metrology—Basic and general concepts and associated terms (VIM 3)
4. Freund RJ, Wilson WJ, Mohr DL (2010) Chapter 12—Categorical data. In: Statistical methods, 3rd edn. Academic Press, Oxford, pp 633–661
5. Agresti A (2012) Categorical data analysis, 3rd edn. Wiley, Hoboken, NJ