Bagrov V. G. Vladislav Gavriilovich, Gitman D. M. Dmitry Maksimovich, Zadorozhnyi V. N. Valery Nikolaevich, Lavrov P. M. Peter Mikhailovich, & Shapovalov V. N. Vladimir Nikolaevich. (1975). New exact solutions to Dirac's equation. I. 1975. https://doi.org/10.1007/BF01093232

Bagrov V. G. Vladislav Gavriilovich, Gitman D. M. Dmitry Maksimovich, Zadorozhnyi V. N. Valery Nikolaevich, Lavrov P. M. Peter Mikhailovich, and Shapovalov V. N. Vladimir Nikolaevich. New Exact Solutions to Dirac's Equation. I. 1975, 1975. https://doi.org/10.1007/BF01093232.

Bagrov V. G. Vladislav Gavriilovich, et al. New Exact Solutions to Dirac's Equation. I. 1975, 1975. https://doi.org/10.1007/BF01093232.