V. P. Gusynin, O.O. Sobol, A. V. Zolotaryuk, and Y. Zolotaryuk, Bound states of a one-dimensional Dirac equation with multiple delta-potentials, Low Temp. Phys. 48, (2022) [Fiz. Nyzk. Temp. 48, 1157–1168, (2022)] DOI: https://doi.org/10.1063/10.0015111.