TY - JOUR AU - E. I. Moiseev TI - A mean-value formula for the eigenfunctions of a second-order elliptic selfadjoint operator JO - Doklady Akademii Nauk PY - 1971 SP - 524 EP - 525 VL - 197 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1971_197_3_a4/ LA - ru ID - DAN_1971_197_3_a4 ER -