1. Yu. V. Linnik, Method of Least Squares and the Principles of the Theory of Observations, Fizmatgiz, Moscow (1962), 2nd ed.
2. D. N. Ushakov (ed.), Explanatory Dictionary of the Russian Language, OGIZ, Moscow (1935).
3. International Vocabulary of Metrology (VIM3) [Russian translation], NPO Professional, St. Petersburg (2010).
4. Ch. Ehrlich, R. Dybkaer, and W. Wöger, Accredit. Qual. Assur., 12, 201–218 (2007), https://doi.org/https://doi.org/10.1007/s00769-007-0259-4.
5. Ch. Ehrlich, R. Dybkaer, and W. Wöger, “Evolution of philosophy and description of measurement,” Glavn. Metrol., No. 1, 11–30 (2016).