1. V. S. Aleksandrov, A. S. Katkov, and G. P. Telitchenko, “New state primary standard and state test scheme for measuring DC electrical voltage and electromotive force,” Izmer. Tekhn., No. 3, 6–9 (2002); Measur. Techn., 45, No. 3, 228–232 (2002).
2. D. Avrons et al., “Bilateral comparison of 1.018 V standards between the VNIIM and the BIPM,” Rapport BIPM-99, BIPM Publ. (1999).
3. A. S. Katkov, S. Solve, and M. Stock, “Bilateral comparison of 10 V standards between the VNIIM (Russia) and the BIPM (key comparison BIPM.EM.K11.b),” Rapport BIPM-07/07, BIPM Publ. (2007).
4. A. S. Katkov and P. A. Chernyaev, “Final report on the bilateral key comparison COOMET.EM.BIPM-K11: Comparison of Josephson voltage standards by using Zener transfer standards,” Metrologia, 49, Tech. Suppl. 01008 (2012).
5. Josephson Voltage Standard supraVOLTcontrol, www.supracon.com/en/josephson_voltage_standard.htm .