1. V. I. Berezkin, Carbon: Closed Nanoparticles, Macrostructures, Materials (ARTEGO, St. Petersburg, 2013) [in Russian].
2. V. I. Berezkin, Introduction to Physical Adsorption and Technology of Carbon Adsorbents (Viktoriya Plyus, St. Petersburg, 2013) [in Russian].
3. A. V. Eletskii, A. A. Knizhnik, B. V. Potapkin, and J. M. Kenny, Phys. Usp. 58, 209 (2015).
4. O. Gunnarson. Rev. Mod. Phys. 69, 575 (1997).
5. V. Buntar and H. W. Weber, Supercond. Sci. Technol. 9, 599 (1996).