%0 Journal Article %A E. A. Volkov %T The differential properties of the solutions of Laplace's equation, and the errors in the method of nets with boundary values in $C_{2}$ and $C_{1,1}$ %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1969 %P 573-584 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1969_9_3_a6/ %G ru %F ZVMMF_1969_9_3_a6