TY - JOUR AU - A. L. Skubachevskii TI - On Normality of Some Elliptic Functional Differential Operators JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1997 SP - 60 EP - 65 VL - 31 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1997_31_4_a5/ LA - ru ID - FAA_1997_31_4_a5 ER -