Geodesic
The convergence in $W_2^2$ of a difference solution of the Dirichlet problem
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 3, pp. 470-474 
G. K. Berikelashvili. The convergence in $W_2^2$ of a difference solution of the Dirichlet problem. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 30 (1990) no. 3, pp. 470-474. http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_3_a12/
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     title = {The convergence in $W_2^2$ of a~difference solution of the {Dirichlet} problem},
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Voir la notice de l'article provenant de la source Math-Net.Ru

An estimate of the rate of convergence of the difference scheme considered in a net metric $W_2^2$, matched with the smoothness of the required solution, is established when the solution of the initial problem belongs to Sobolev spaces.

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