TY - JOUR AU - A. Yu. Konstantinov TI - On the Essential Spectrum of a Class of Matrix Differential Operators JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2002 SP - 76 EP - 78 VL - 36 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2002_36_3_a10/ LA - ru ID - FAA_2002_36_3_a10 ER -