1. ISO/IEC Guide 43-1 (1997) Proficiency testing by interlaboratory comparisons—Part 1: Development and operation of proficiency testing schemes. ISO, Geneva
2. ISO/DIS 1358 (2002) (Provisional Version) Statistical methods for use in proficiency testing by interlaboratory comparisons, Committee identification: ISO/TC 69/SC 6. Secretariat: JISC/JSA
3. Kuselman I, Papadakis I, Wegscheider W (2001) Accred Qual Assur 6:78–79
4. Kuselman I, Pavlichenko M (2004) Accred Qual Assur 9:387–390
5. WECC Doc. 15 (1987) WECC International Measurement Audits