TY - JOUR AU - A. K. Gushchin TI - A criterion for the existence of $L_p$ boundary values of solutions to an elliptic equation JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2018 SP - 53 EP - 73 VL - 301 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_2018_301_a4/ LA - ru ID - TM_2018_301_a4 ER -