Alexander Eremko, Larissa Brizhik, and Vadim Loktev, Bound electron states in a charged chain within the Dirac description, Low Temp. Phys. 51, 680–687, (2025) [Fiz. Nyzk. Temp. 51, 761–768, (2025)] DOI: https://doi.org/10.1063/10.0036744.