1. SI Brochure: The International System of Units (SI), http://www.bipm.org/en/publications/si-brochure , accessed Feb. 27, 2015.
2. I. M. Mills et al., “Redefinition of the kilogram: a decision whose time has come,” Metrologia, 42, 1–80 (2005).
3. I. M. Mills et al., “Redefinition of the kilogram, ampere, kelvin, and mole: a proposed approach to implementing CIPM recommendation 1 (CI-2005),” Metrologia, 43, 227–246 (2006).
4. S. A. Kononogov, Metrology and the Fundamental Physical Constants, Standartinform, Moscow (2008).
5. L. K. Isaev, S. A. Kononogov, and V. V. Khruschov, “On the redefinition of the four basic units of the International System of Units,” Izmer. Teknh., No. 2, 3–8 (2013).