TY - JOUR AU - V. Ya. Yakubov TI - Sharp estimates for $L_2$-normalized eigenfunctions of an JO - Doklady Akademii Nauk PY - 1993 SP - 286 EP - 287 VL - 331 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1993_331_3_a8/ LA - ru ID - DAN_1993_331_3_a8 ER -