1. V. I. Volk, L. V. Arseenkov, S. I. Smirnov, et al., RF Patent No. 2603019 (2016).
2. A. Ya. Stolyrevsky, RF Patent No. 2556108 (2015).
3. A. Yu. Zhabin, G. A. Apalkov, S. N. Smirnov, et al., RF Patent No. 2626763 (2017).
4. M. I. Nagurbaeva, S. V. Chizhevskaya, and E. P. Magomedkov, Izv. Vyssh. Uchebn. Zaved., Usp. Khim. Khim. Tekhnol., No. 31 (10), 40 (2017).
5. E. Y. Choi and S. M. Jeong, Prog. Nat. Sci.: Mater. Int. 25, 572 (2015).