TY - JOUR AU - L. V. Kritskov TI - Necessary conditions for a system of root functions of a one-dimensional Schr\"odinger operator to be a basis in $L_p(G)$ JO - Doklady Akademii Nauk PY - 1990 SP - 1306 EP - 1309 VL - 311 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_311_6_a5/ LA - ru ID - DAN_1990_311_6_a5 ER -