@article{GDZPPN001184040,
title = {Some Current Questions on Solving Linear Elliptic Problems.},
journal = {Numerische Mathematik},
volume = {58},
year = {1990},
pages = {527-546},
zbl = {0708.65092},
url = {http://dml.mathdoc.fr/item/GDZPPN001184040}
}
Birkhoff, G.; Lynch, Robert E. Some Current Questions on Solving Linear Elliptic Problems.. Numerische Mathematik, Tome 58 (1990) pp. 527-546. http://gdmltest.u-ga.fr/item/GDZPPN001184040/