T.C. Adorno, S.P. Gavrilov, and D.M. Gitman, “Schwinger mechanism of magnon-antimagnon pair production on magnetic field
inhomogeneities and the bosonic Klein effect”, Phys. Rev. B, 110 (2024), 014410
S.P. Gavrilov and D.M. Gitman, “Regularization,
renormalization and consistency conditions in QED with }$x${\em -electric
potential steps”, Eur. Phys. J. C, 80 (2020), 820
S.P. Gavrilov and D.M. Gitman, “Quantization of
charged fields in the presence of critical potential steps”, Phys. Rev. D, 93 (2016), 045002