@article{GDZPPN001180436,
title = {Finite Difference Approximations to the Dirichlet Problem for Elliptic Systems.},
journal = {Numerische Mathematik},
volume = {50},
year = {1986},
pages = {227-238},
zbl = {0602.65068},
url = {http://dml.mathdoc.fr/item/GDZPPN001180436}
}
Walter, W.; Huy, C.U.; McKenna, P.J. Finite Difference Approximations to the Dirichlet Problem for Elliptic Systems.. Numerische Mathematik, Tome 50 (1986) pp. 227-238. http://gdmltest.u-ga.fr/item/GDZPPN001180436/