@article{GDZPPN001171313,
title = {Superconvergence for Galerkin Methods for the Two Point Boundary Problem Via Local Projections.},
journal = {Numerische Mathematik},
volume = {21},
year = {1973},
pages = {270-278},
zbl = {0281.65046},
url = {http://dml.mathdoc.fr/item/GDZPPN001171313}
}
Dupont, Todd; Douglas, Jim Jr. Superconvergence for Galerkin Methods for the Two Point Boundary Problem Via Local Projections.. Numerische Mathematik, Tome 21 (1973) pp. 270-278. http://gdmltest.u-ga.fr/item/GDZPPN001171313/