1. GOST 8.315-97:The State System of Measurements: Reference Materials for the Composition and Properties of Substances and Materials: Basic Concepts [in Russian].
2. GOST R 8.563-96:The State System of Measurements: Methods of Making Measurements [in Russian].
3. I. A. Piterskikh,Izmer. Tekh., No. 11, 68 (1998).
4. Guide 33: Uses of Certified Reference Materials, ISO, Geneva 20, Switzerland (1989), p. 12.
5. GOST 8.207-76:The State System of Measurements: Direct Measurements with Repeated Observations: Methods of Processing the Observational Results: Basic Concepts [in Russian].