TY - JOUR AU - A. S. Migaeva AU - A. V. Pereskokov TI - Asymptotics of the Spectrum of the Hydrogen Atom in Orthogonal Electric and Magnetic Fields near the Lower Boundaries of Spectral Clusters JO - Matematičeskie zametki PY - 2020 SP - 734 EP - 751 VL - 107 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2020_107_5_a5/ LA - ru ID - MZM_2020_107_5_a5 ER -