TY - JOUR AU - Yu. G. Safarov TI - Riesz means of the distribution function of the eigenvalues of an elliptic operator JO - Zapiski Nauchnykh Seminarov POMI PY - 1987 SP - 143 EP - 145 VL - 163 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1987_163_a11/ LA - ru ID - ZNSL_1987_163_a11 ER -