TY - JOUR AU - A. A. Kosmodem'yanskii (Jr.) TI - Isoperimetric estimates of the second boundary value problem for the Poisson equation JO - Matematičeskie zametki PY - 1991 SP - 48 EP - 53 VL - 50 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1991_50_5_a6/ LA - ru ID - MZM_1991_50_5_a6 ER -