TY - JOUR AU - V. S. Rabinovich TI - Essential spectrum of one-dimensional Dirac operators with delta-interactions JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2020 SP - 90 EP - 94 VL - 54 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2020_54_2_a7/ LA - ru ID - FAA_2020_54_2_a7 ER -