M. O. Danilov, G.I. Dovbeshko, I. A. Rusetskiy, U. K. Afonina, V. N. Byckov, O. P. Gnatyuk, S. S. Fomanyuk, and G. Ya. Kolbasov, Thermochemical synthesis of graphite-like carbon nitride and its application, Low Temp. Phys. 48, 344–348, (2022) [Fiz. Nyzk. Temp. 48, 387-392, (2022)] DOI: https://doi.org/10.1063/10.0009741.