1. Calibration of the NPL secondary standard radionuclides calibrator for the new 10R Schott, type 1+ vials;Baker;Appl. Radiat. Isot.,2005
2. Bé, M.M., Chisté, V., Dulieu, C., Browne, E., Chechev, V., Kuzmenko, N., Helmer, R., Nichols, A.N., Schönfeld, E., Dersch, R., 2004. Monographie BIPM-5: table of radionuclides. Bureau International des Poids et Mesures: Sèvres, France.
3. ISO 13528, 2005. (E) Statistical methods for use in proficiency testing by interlaboratory comparisons.
4. ISO/IEC 17025, 2005. General requirements for the competence of testing and calibration laboratories.
5. ISO/IEC Guide 43-1, 1997a. Proficiency testing by interlaboratory comparisons—Part 1: Development and operation of proficiency testing schemes.