1. ISO/IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories,2000
2. EURACHEM/CITAC Guide Quantifying Uncertainty in Analytical Measurement;EURACHEM/CITAC,2000
3. (JCGM 100) Evaluation of Measurement Data – Guide to the Expression of Uncertainty in Measurement;Guide GUM,2008
4. Workshop on the Experience with the Implementation of ISO/IEC 17025, Paris;Eurachem-Eurolab,2001
5. Comparison of strategies to quantify uncertainty of lead measurements in biological tissue at mg kg -1 level