V. V. Sumarokov, A. V. Dolbin, A. Jeżowski, D. Szewczyk, D. Gnida, N. A. Vinnikov, and M. I. Bagatskii, Measurements on the heat capacity of thermal reduced graphene oxide down to 0.3 K, Low Temp. Phys. 50, 185–187, (2024) [Fiz. Nyzk. Temp. 50, 195–197, (2024)] DOI: https://doi.org/10.1063/10.0024332.