TY - JOUR AU - E. A. Volkov TI - On the conditions that the net method for the Laplace equation converges with speed~$h^2$ JO - Matematičeskie zametki PY - 1969 SP - 669 EP - 679 VL - 6 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1969_6_6_a3/ LA - ru ID - MZM_1969_6_6_a3 ER -