TY - JOUR AU - Ya. M. Zhileikin TI - On a refinement of the bound of the spectral function of the Laplace operator JO - Doklady Akademii Nauk PY - 1961 SP - 543 EP - 546 VL - 141 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_141_3_a6/ LA - ru ID - DAN_1961_141_3_a6 ER -