N. V. Lemesh, R. M. Rudenko, O. O. Voitsihovska, V. N. Poroshin, A. S. Nikolenko, and P. A. Manoryk, Electrical properties of hierarchical nitrogen-doped multi-walled carbon nanotubes obtained using cobalt nanoparticles, Low Temp. Phys. 49, 1050–1057, (2023) [Fiz. Nyzk. Temp. 49, 1154–1162, (2023)] DOI: https://doi.org/10.1063/10.0020598.