Petrosyan, R.; Davtyan, M. INVARIANT SOLUTION OF THE DIRAC EQUATION IN THE CROSSED ELECTRIC AND MAGNETIC FIELDS $ (H \mathclose{>} E) $. Proc. YSU A: Phys. Math. Sci. 2019, 53 (2 (249), 138-141. https://doi.org/10.46991/PYSU:A/2019.53.2.138.