S. B. Feodosyev, I. A. Gospodarev, V. A. Sirenko, E. S. Syrkin, I. S. Bondar, and K. A. Minakova, Propagation and localization of phonons in graphite and graphene nanofilms, Low Temp. Phys. 48, (2021) [Fiz. Nyzk. Temp. 48, 137-142, (2021)] DOI: https://doi.org/10.1063/10.0009291.