TY - JOUR AU - B. Ya. Levit TI - Second-order asymptotic optimality and positive solutions of Shr\"odinger's equation JO - Teoriâ veroâtnostej i ee primeneniâ PY - 1985 SP - 309 EP - 338 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TVP_1985_30_2_a7/ LA - ru ID - TVP_1985_30_2_a7 ER -