A. Grib, M. Vitort, S. Petrushenko, and S. Dukarov, Diffusion of the hydrogen in nanocrystalline vanadium films, Low Temp. Phys. 49, 415, (2023) [Fiz. Nyzk. Temp. 49, 452–458, (2023)] DOI: https://doi.org/10.1063/10.0017580.