TY  - JOUR
AU  - L. V. Hörmander
TI  - On the Riesz means of spectral functions and eigenfunction expansions for elliptic differential operators
JO  - Matematika
PY  - 1968
SP  - 91
EP  - 130
VL  - 12
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1968_12_5_a3/
LA  - ru
ID  - MAT_1968_12_5_a3
ER  -