TY - JOUR AU - V. I. Korzyuk AU - E. S. Cheb TI - Boundary Problems for a Elliptical Second Order Equations JO - Trudy Instituta matematiki PY - 2007 SP - 38 EP - 47 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMB_2007_15_2_a4/ LA - ru ID - TIMB_2007_15_2_a4 ER -