TY - JOUR AU - G. S. Popov AU - M. A. Shubin TI - Asymptotic expansion of the spectral function for second-order elliptic operators in $\mathbb{R}^n$ JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1983 SP - 37 EP - 45 VL - 17 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1983_17_3_a4/ LA - ru ID - FAA_1983_17_3_a4 ER -