Yu. Averkov, Yu. Prokopenko, and V. Yakovenko, Semiconductor nanotube eigenmodes and the Aharonov–Bohm effect, Low Temp. Phys. 48, (2021) [Fiz. Nyzk. Temp. 48, 36-41, (2021)] DOI: https://doi.org/10.1063/10.0008961.