1. Bureau international des poids et mesures (BIPM): The international system of units (SI), 7th edn. (BIPM, Pavillon de Breteuil, Sèvres Cedex, France 1998)
2. International Organization for Standardization (ISO): International vocabulary of basic and general terms in metrology (BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML, Genf 1993)
3. International Organization for Standardization (ISO): Guide to the expression of uncertainty in measurement (ISO, Genf 1993)
4. A. J. Wallard, T. J. Quinn: Intrinsic standards—are they really what they claim? (Cal Lab Magazine, Vol. 6, No. 6, Nov./Dec. 1999)
5. W. Martienssen, H. Warlimont (Eds.): Springer Handbook of Condensed Matter and Materials Data (Springer, Berlin Heidelberg 2005)